Time: 15 minutes
Materials: test tubes + holder, spray paint, pencils, foam board
1. Cut holes in your foam board so that the pencils can stand upright. Place the test tubes over the pencils.
2. Spray the test tubes with paint. Let dry for 1 minute in between coats.
*note that in the video I sprayed the tubes with water & vinegar. My initial plan was to make these mercury glass, but the test tubes were plastic and it didn’t work.