Learning to spread peanut butter and jelly on bread is an important step to building the motor skills necessary for driving a car and french braiding hair.
Available at: Kitty Baby Love http://kittybabylove.com/index.php?main_page=index&cPath=1&zenid=0075e3b9a641dab649c1d1549f0d9dc6 ($3 each)
Even if they can't pronounce "mitochondria" yet, they'll appreciate the funny squiggles!
If you have a toddler you are pretty much legally obligated to dress them up like an Ewok. Don't think, just do it.