Indoor Activities for Kids: Homemade Lava Lamps. Vegetable oil, a about of the water bottle, then water. 10 drops of food coloring. Then take a alkaseltzer tab and break it into 4 pieces. Drop one in at a time and wait for each to dissove!
Thought of this in my weird dream going into another galaxy underworld (pretty sure it was inspired by Stranger Things). I said in my dream a good idea for my birthday party could be a galaxy themed sleepover!