I love this idea from Little Hands, Big Work! She froze colored water in muffin tins for the kids to play with in the summer time but then thought of adding them to the bath. She says her little guys had a blast with the swirling colors and also got to talk about concepts like color mixing and temperatures. Head on over to this page to read all about it.
Be sure to browse the rest of her blog too. She has tons of wonderful ideas for "the baby to 5 crowd."
And speaking of babies, it looks like she had one Friday. Congratulations and I hope all is well. 🙂