We have a bookshelf that is a train track, too.
And one of the smallish rectangular blocks is often a camera. (Her latest quirk... she wants me to sign
"cheese" instead of saying it. I don't think she gets the "cheese" concept.)
She's getting heavily into make-believe -- always has had that interest, but much more recently. Getting her a dress-up chest for her birthday (went around and got all kinds of costumes cheap after halloween... ladybug wings, fairy wings, crown, princess costume, little red riding hood costume, fire chief hat, etc.) Grandma (on request) is getting her a doll stroller, as her favorite thing to do at one of her classes is take a baby doll and wheel it around. She's heavily into the whole baby thing right now.
Geez, that's all kinda girly. Fire hat, anyway.
Aside from that stuff, her very favorite thing is art. She loves paints especially. I think she likes the process, not just the product.
But the camera does sound really cool.