SCIENCE FOR CHILDREN-Having already done this, it was a great addition for sand and sensory for even toddlers. Developmentally appropriate for children of all ages depending on what is added. Will absolutely do this again and again, the children loved it!!
Wish I could have done this. If kids are grown, still a great idea for grandkids..... Better yet - instead of cash, use savings bonds, they will grow in value and be worth their face value when graduation comes!