Martha Stewart brings Easter eggs to a whole new level with her crystal egg geode craft project. It's more of a craft for older kids but the younger ones will love the results. It also takes a lot of unique and intricate ingredients such as alum powder.
Good for ages 13 and up.
Get the instructions here:
http://www.marthastewart.com/343344/crystal-egg-geodes/
Connections academy creates geodes as well but using regular ingredients you'll find in you'll kitchen including salt, water, food coloring, and baking soda.
Get the instructions here:
Those northern skies uses eggs to make their version.
Get the instructions here:
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