tutorial: bath bomb surprise
Thursday, January 31st, 2008For my son’s seventh birthday party I wanted to make party favors that didn’t cost very much, were mostly hand made, and that weren’t stupid cheap plastic games that would break immediately. I made pirate booty bags out of some pirate fabric I already had, put some chocolate coins in each one, some fake dollar bills, a few plastic play rings, and one surprise bath bomb which the kids could use in their next bath and after watching the ball fizz for a couple of minutes in the bath a prize would drop out of the center of it.

Because the trinkets you use will be immediately immersed in water you need to choose water proof ones. Plastic bugs or rings (shown in this tutorial) are all good choices. They also need to be small. For all the kids I put a pirate button in the bath bomb, but for the birthday boy I hid a tiny corked bottle with a message inside it for him. He loved it!
This project is not difficult, but it has one tricky aspect to it which is that baking soda and citric acid combined will foam and fizz when in contact with too much moisture, which is what you want it to do in your bath. To get it to form balls you have to get it just wet enough, without setting off the chemical reaction that makes it expand. There is no exact science to knowing when the mixture is ready to form balls. Humidity levels in homes differ. It might take me fifteen sprays of witch hazel to get mine right, but that might not be true in your house. I highly recommend having a second person do the witch hazel spraying while you whisk it in simultaneously so that the moisture has no chance to set off a reaction. [might be a good way for the kids to help out -ed]



















