Bring water to a boil.
Place 6 Tablespoons in a quart sized wide mouth jar, 3 Tablespoons in a pint size wide mouth jar.
Form the pipe cleaner into a heart and tie a string to the top.
Carefully pour the water into the jar.
Stir until Borax is completely dissolved and water is clear.
Place a popsicle stick through the string and carefully lower the heart into the water making sure it's not touching the sides or bottom of the jar.
Let the jar set overnight if possible.
Remove from jar, then cut the string from the heart and add a ribbon. Hang in doorway or window.