Doll up for Halloween this year with a simple DIY add on to a cute baby doll dress and voila! This wind-up key is so easy to make! All you need is some cardboard, paper towel tube and metallic paint. Makes great last-minute costumes!
Such simple items can be transformed into a cool activity that blends both science and art. If you have an empty water bottle, water, vegetable oil and food coloring, you can make this fascinating kid's activity! As a bonus, it also teaches kids about liquid density (and an explanation about that is included in this post!).