Give your kids the 365 penny challenge!
Science for Kids: Crystal Suncatcher Craft with Epsom salt and hot water, ratio, and clear plastic lids
FUN Science project- Crystal Egg Geodes (will have to substitute the eggs for something else though) fun kids crafts, kid ideas, kids diy ideas
LED Shoe Kit show kit led technology technology ideas tech
8 Easy and Affordable Kid-Friendly Backyard Ideas - thegoodstuff