What do I buy canned? Pinto and black beans, tomatoes, once in a while artichoke hearts in water, oh, and my new favorite thing, chipotle in adobo sauce. Clams, anchovies, tuna, sardines - freah seafood better, but...
And recently some water chestnuts and bamboo shoots for playing around with chinese cooking again. And a can of inarizushi no moto - the bean curd pockets to fill with japanese rice and rice vinegar - haven't seen those for years, used to like them. (That meant I had to buy 5 pounds of Calrose rice..)
But I have been buying some frozen veggies after years of not doing that - I always skipped the frozen food aisle except for ice cream once in a blue moon.