To a man with a hammer, everything looks like a nail.

To a girl with a fascination for jigsaw puzzles, every toy looks like a jigsaw puzzle.
A plastic Rush Hour game? – Try to fit all the cars on the board, in neat rows.
Blister pack with toy food made of rubber? – Take the pieces out and then try to fit them back into their little shaped slots.
Set of six soft furry animal-shaped bowling pins? – Take them out of their bag and then try to fit them back in again.