Crystal Snowflakes overnightout of Borax 1. Form your pipe cleaners into a snowflake shape or whatever shape you desire, while you boil water. 2. Add water to your mason jars. 3. Mix in borax. Stir it but don't worry if it isn't completely dissolved. 4. Attach your pipe cleaner shape to the string and hang it from the pen/pencil while submerging it in your jar. Leave overnight.