Pry Legos apart with a manicure tool
My son Henry is 4.5 and is in love with LEGOs. He is a little too old for Duplo, but a little too young for regular sized LEGO, mostly because he can't figure out how the heck to pry them apart once they've been stuck together. I was in the shower one day and caught a glimpse of a little manicure set my mother in-law got me for Christmas. One of the little implements is a cuticle-pusher-backer (can you tell I am well versed in the art of the manicure?) that looks kind of like a little shovel, only rounded. I tested it out and it works great as a tiny little crowbar to help Henry get those LEGO pieces apart instead of using his teeth (yikes!).
I've never even figured out why cuticles need to be pushed! Lego prying? That I can get.