This Valentine's Day, nothing says "love" quite like a giant tub of flubber!
Borax (sodium tetraborate) is a naturally-occurring mineral salt commonly used as a laundry booster or cleaner. As with any other cleaning product, it should be kept away from children not under direct supervision of an adult. Do not allow children to ingest Borax. If consumed, contact a poison control center immediately. Wash hands after play, as prolonged skin exposure may cause irritation.
In one bowl, mix 1 1/2 cups warm water with the glue and a few drops of food coloring or watercolor. In a second bowl, mix 1 1/3 cups of warm water and the Borax. There are various methods, but we prefer to pour the warm water/glue mixture into the bowl with the Borax, and gently stir with a stick. There will be quite a bit of liquid left over. The glue is still a liquid but it stays together, and within a few seconds it will begin to turn rubbery and you can stick your hand in the bowl to mix it a little. It will be a little slippery and very stringy at this point.