Shape your pipe cleaners into a heart shape. You can make them as big or small as your like :). Tie the heart with string to a popsicle stick. Fill jar with 9 tablespoons borax and 3 cup of boiling water, make sure to mix the mixture well. Hang the heart in the jar. Let your hearts sit over night and remove. You can take the heart out after 6 hours but the longer it sits in the solution the more crystals it will get.