I was thinking the same thing. I can't place it, myself. It looks like the sort of thing a little girl might play with, though - my daughter's not really old enough for handheld game-type things, but maybe someone here recognizes it.
I was thinkig Hello Kitty or one of those "computer pets" things. Anyone we could ping with kids around the same age?
I was debating whether it was a toy or an envelope. It kind of looks like an addressed envelope. I zoomed in, but can't make anything out.