DIY Grow an Overnight Crystal Garden Tutorial from babble dabble do. All you need is epson salts, water and food coloring. This post has lots of great tips on making this science experiment for kids work.
DIY Liquid Density Tower Experiment Tutorial from Steve Spangler Science. This is kind of like the layered fancy drinks I posted here.
DIY 2 Ingredient Glow in the Dark Lava Lamp Bag Recipe from Growing a Jeweled Rose. She has her own easy cheap non-toxic recipe for “glowing homemade water colors” that doesn’t contain highlighters or glow in the dark sticks that you break open.
DIY Crystal Borax Snowflake Tutorial from Work It, Mom here. How easy is this DIY? Borax and pipe cleaners.