Our science class is studying biology this year and I've taught the important and somewhat boring information on plant and animal cells, herbivores versus carnivores, and on and on and on.
To break up the monotony (I get bored easily) we made some homemade Chia Children. I took a picture of each kid and put it up against the wall of a clear cup - filled the cup with potting soil and chia seeds. The "hair" grew perfectly but the pictures disintegrated as the hair grew. (which I found even more amusing). Next time, I'll put the pictures in plastic. The roots were visible and the kids spent hours examining the whole thing.
Dumb but amazing science.