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Thanks to Wikipedia here are a few to choose from -

This is a list of fictional snakes from literature, movies etc.

Asp, a snake that was said to have killed Cleopatra
Hoop Snake, a legendary creature of the United States and Australia
The Snakes, that was the hair of Medusa in Greek mythology
Apep, the Ancient Egyptian serpent of chaos and enemy of Ra
Níðhöggr is a serpent who gnaws at a root of the World Tree Yggdrasill in Norse mythology
In Norse mythology, Jörmungandr is a sea serpent so large that he was able to surround the Earth and grasp his own tail. When he lets go the world will end.
[edit] Snakes in literatureAsmodeus Poisonteeth, a giant Adder who lived in an old sandstone quarry north-east of Redwall Abbey in Redwall, a fantasy novel by Brian Jacques.
Kaa, an Indian Python from The Jungle Book collection of stories written by Rudyard Kipling
The Lady of the Green Kirtle (who can take the form of a green serpent) from The Chronicles of Narnia
Lord Boreal's daemon in The Subtle Knife by Philip Pullman
Lord Cedric, a fictional character in the W.I.T.C.H. comic book series
Snake from Sid's Snake, a long-running comic strip in the British comic Whizzer and Chips
Snake from Snake Tales, a comic strip written by Australian cartoonist Allan Salisbury (aka Sols).
Snavely, snake from Walt Kelly's Pogo, friend to Li'l Mouse.
Swamp Adder - a fictional breed of snake from India, featured in the story The Adventure of the Speckled Band
Sherahi, a large Burmese python in Sandeagozu
Unnamed python that clearly understands, and is accidentally set free by, Harry Potter in Harry Potter and the Philosopher's Stone
Various miscellaneous snakes that appear from time to time in Gary Larson's The Far Side
Crawly from Good Omens.
[edit] Snakes in film or televisionKaa, an Indian Python from Walt Disney's The Jungle Book
Master Viper, a Green Tree Viper and member of the Furious Five the film Kung Fu Panda
Giant Anacondas from the films, Anaconda, Anacondas: The Hunt for the Blood Orchid and Anaconda 3: Offspring
Larry the Anaconda, A dim-witted Anaconda from Walt Disney's The Wild
Mara, a villain from the British science fiction television series, Doctor Who
Nigel, domestic boa constrictor in filmed serials from Vegetable Soup
Sammy the Snake, a Muppet character from Sesame Street who "looks and sounds like the letter S"
Sir Hiss, a Snake from Walt Disney's Robin Hood
Snake featured in the opening titles of the Blackadder II TV series
Snake, cobra-like spy from Skunk Fu
Every snake in Snakes on a Plane had a production name, such as "Scarface," "Peanut," and "Kong." (MiHiTi is a fan nickname for the Taipan.)
Kaa, as his young self in the TV series Jungle Cubs
Mrs. P., the nanny from Legends of the Guardians
Rattlesnake Jake, a Western diamondback rattlesnake, from Rango (2011 film)
[edit] Snakes in animationAdder, an Adder from the animated series The Animals of Farthing Wood
Blue Racer, a blue snake in the animated series The Blue Racer
Cohrada as a cobra in Beast Wars Neo.
Chimera Snake, a monstrous snake from Tokyo Mew Mew
King Hiss, is the villainous king of the Snake Men in the Masters of the Universe animated series
Kobra Khan, a member of the Evil Warriors in the 80's version and a member of the Snake Men in 2002 version of Masters of the Universe animated series
Floyd the Insane Rattler snake, in Tex Tinstar/The Schnookums and Meat Funny Cartoon Show
Lord Cedric, a fictional character in the W.I.T.C.H. Animated Series
Sinuous, an Adder (and partner of Adder) from the animated series The Animals of Farthing Wood
Snake Face, a member of the Snake Men in the Masters of the Universe animated series
Sssqueeze, a member of the Snake Men in the Masters of the Universe animated series
Tung Lashor, a member of the Evil Horde in the She-Ra: Princess of Power animated series and a member of the Snake Men in the 2002 version of Masters of the Universe
Several miscellaneous snakes from the Inspector Gadget episode, "Snakin' All Over"
Several miscellaneous snakes from the Simpsons episode, "Whacking Day"
Rock Snakes from Thunderbirds Are Go
[edit] Snakes in advertisingDodge Viper, a mascot snake
Shelby Cobra
[edit] Snakes in computer gamesDendar the Night Serpent, a Snake from the Forgotten Realms campaign setting for the Dungeons & Dragons fantasy role-playing game
Snake from the Snake (video game)
Coily from Q*bert
Rattly, animal buddy in Donkey Kong Country 2: Diddy's Kong Quest
Ekans, Arbok, Seviper, Onix, Steelix Snivy, Servine, Serperior are snake creatures in Pokémon
[edit] Snakes as mascots, toys and otherBurmese Python, used by Jake "The Snake" Roberts who is an American professional wrestler
Cobra, shown on the Cape Cobras crest, who are a Cricket club based in Cape Town, South Africa
Cobra, shown on the Cobra Beer logo, which is a British beer company founded in 1989 by Karan Bilimoria
Dregs, Sour Grapes's pet snake from Strawberry Shortcake
Hissy, Slithery a Beanie Baby
Slytherin House at Hogwarts School of Witchcraft and Wizardry recognizes the Snake as its mascot
Snakes from the popular board game, Snakes and Ladders
Viper shown on the Newcastle Vipers crest, who are an ice hockey club based in Newcastle upon Tyne, England
Viper shown on the Calgary Vipers crest, who are a Baseball club based in Calgary, Alberta, in Canada
Viper shown on the Rio Grande Valley Vipers crest, who are a Basketball club of the NBA Development League
Viper shown on the St. Louis Vipers crest, who are a defunct roller hockey team from St. Louis, Missouri in the United States
Viper shown on the Tennessee Valley Vipers crest, who are a professional American Football team

Olympic host cities

Athens Greece Europe — Summer 1896 April 6 April 15
Paris France Europe — Summer 1900 May 14 October 28
St. Louis[a] United States North America — Summer 1904 July 1 Nov 23
London Great Britain Europe — Summer 1908 April 27 October 31 [7]
Stockholm Sweden Europe — Summer 1912 May 5 July 27 [8]
Berlin Germany Europe — Summer 1916 Cancelled due to WWI[9]
Antwerp Belgium Europe — Summer 1920 April 20 September 12 [10]
Chamonix France Europe — I Winter 1924 January 25 February 4 [11]
Paris France Europe S008VIII — Summer 1924 May 4 July 27 [12]
St. Moritz Switzerland Europe — II Winter 1928 February 11 - 19 [13]
Amsterdam Netherlands Europe S009IX — Summer 1928 May 17 August 12 Lake Placid USA— III Winter 1932 February 4 February 15 [15]
Los Angeles USA X — Summer 1932 July 30 August 14 [16]
Garmisch-Partenkirchen Germany — IV Winter 1936 February 6 - 16
Berlin Germany Europe S011XI — Summer 1936 August 1 August 16 [18]
Sapporo Japan Asia — W005aV Winter 1940 Cancelled due to WWII[9]
Tokyo Japan Asia S012XII — Summer 1940 Cancelled due to WWII[9]
Cortina d'Ampezzo Italy — W005bV Winter 1944 Cancelled due to WWII
London Great Britain S013XIII — Summer 1944 Cancelled due to WWII
St. Moritz Switzerland Europe — V Winter 1948 January 30 February 8
London Great Britain Europe S014XIV — Summer 1948 July 29 August 14
Oslo Norway Europe — W006VI Winter 1952 February 14 February 25
Helsinki Finland Europe S015XV — Summer 1952 July 19 August 3
Cortina d'Ampezzo Italy — W007VII Winter 1956 January 26 February 5
Melbourne Australia S016XVI — Summer 1956 Nov 22 December 8
Stockholm Sweden Europe - June 10 June 17
Squaw Valley United States — W008VIII Winter 1960 February 18 - 28
Rome Italy Europe S017XVII — Summer 1960 August 25 September 11
Innsbruck Austria Europe — W009IX Winter 1964 January 29 February 9
Tokyo Japan Asia S018XVIII — Summer 1964 October 10 October 24
Grenoble France Europe — W010X Winter 1968 February 6 February 18
Mexico City Mexico S019XIX — Summer 1968 October 12 October 27
Sapporo Japan Asia — W011XI Winter 1972 February 3 February 13
Munich Germany Europe S020XX — Summer 1972 August 26 September 11
Innsbruck Austria Europe — W012XII Winter 1976 February 4 February 15
Montreal Canada North America S021XXI — Summer 1976 July 17 August 1
Lake Placid United States — W013XIII Winter 1980 February 14 - 23
Moscow Soviet Union S022XXII — Summer 1980 July 19 August 3
Sarajevo Yugoslavia — W014XIV Winter 1984 February 7 February 19
Los Angeles United States S023XXIII — Summer 1984 July 28 August 12
Calgary Canada — W015XV Winter 1988 February 13 February 28
Seoul South Korea S024XXIV — Summer 1988 September 17 October 2
Albertville France— W016XVI Winter 1992 February 8 February 23
Barcelona Spain Europe S025XXV — Summer 1992 July 25 August 9
Lillehammer Norway — W017XVII Winter 1994 February 12 February 27
Atlanta United StatesS026XXVI — Summer 1996 July 19 August 4
Nagano Japan Asia — W018XVIII Winter 1998 February 7 February 22
Sydney Australia S027XXVII — Summer 2000 September 15 October 1
Salt Lake City United States — W019XIX Winter 2002 February 8 - 24
Athens Greece Europe S028XXVIII — Summer 2004 August 13 August 29
Torino Italy Europe — W020XX Winter 2006 February 10 February 26
Beijing[e] China Asia S029XXIX — Summer 2008 August 8 August 24
Vancouver Canada — W021XXI Winter 2010 February 12 February 28
London Great Britain Europe S030XXX — Summer 2012 July 27 August 12
Sochi Russia Europe[d] — W022XXII Winter 2014 February 7 February 23
Rio de Janeiro Brazil S031XXXI — Summer 2016 August 5 August 21

Nothing there jumped up and bit me, so I leave it to someone else to have a go.