"Ice Tunnels" combine ordinary salt, ice and liquid watercolors in an unforgettable art and science experiment that costs only pennies. Try this on sunny day with lots of bright sunlight and you'll experience amazing color, light refraction and salt crystallization with a hands-on experience for children of all ages. @Christie DeSilva - saw this and thought of you and your kiddos!
ice eggs - Freeze balloons filled with water and small toys. Cut balloon off and play with eggs outside. Provide spoons for cracking ice and digging treasures out. - looks like a great activity for hot summer days!
Make erupting ice chalk paint. 1/4 cup each baking soda and cornstarch. add liquid watercolor paint and 1/2 cup water. Mix well w/spoon. Pour into ice cub tray & freeze. After it starts to melt, use squeeze bottle or baster to add vinegar & make them foam.