This seems like a magic trick, but you really can grow your own crystals with simple household items. To crystallize the base of a vase, opposite, wrap pipe cleaners around a glass vase or bottle where you want crystals to form, then follow the instructions below.
Fuzz It Up
When choosing pipe cleaners, keep in mind the more fibers there are, the more surface area for crystallization—the fuzzier the better. The crystals will absorb dye from the pipe cleaners, so choose a variety of colors if desired.
Bring the Heat
Boil water, then add borax. For every cup of water, use 3–4 tablespoons borax. Stir until water turns clear and the majority of borax is dissolved. If water is cloudy, your crystals will be cloudy, so add more boiling water. For larger crystal formations, cover the container to allow the mixture to slowly cool and develop crystals. For thinner crystallization, skip covering the container.
Once your vase is done, you may want to coat the crystals with a clear finish. Contact and humidity can cause the crystals to dissolve over time.