Even if they can't pronounce "mitochondria" yet, they'll appreciate the funny squiggles!
These have been around forever but never fail to delight me. I think my adult self needs to pop out and get one of my own.
You don't need a doctorate to look like the smartest person your friends have ever met, you just need a really cool lamp.
Mmmmmm Pythagoras is my favorite flavor!
Available at: Rakuten http://en.item.rakuten.com/wich/kittyscope/ ($21.36)