My kids are a little under the weather today, so we decided to do a low-key project indoors and make bath crayons.

There are tons of tutorials online on how to do this, but I primarily used this one from Helium.

Here are the supplies you need: White ivory soap, cookie cutters, a cheese grater and some food coloring. I received the box of cookie cutters from my good friend Casey as a bridal shower gift - they are awesome. Not only are there endless cookie possibilities, but they are perfect for play doh and, well, bath crayons.

You shred the ivory soap with a cheese grater. We ended up using 3 bars of soap.

Then you take a cup of the soap and mix some warm water (about a 1/4 cup) with it. Stir in food coloring of your choice. You are supposed to stir until it is stiff. I can't say that these every got stiff. I also read you are supposed to stir until the soap dissolves, but my kids were a little too excited to wait that long.

Then press them into cookie cutter molds or ice cube trays. I set these on a piece of wax paper over a cookie sheet. We made about 12 crayons out of 3 bars of soap in 6 different colors.

We put them in the freezer for about 20 minutes, then popped them out of the cookie cutters. You are supposed to let them harden for a day or two before using them in the bath. I'll be interested to see if they really work - I've read that people have had varying degrees of success. Either way, the kids had a blast making them, and it was a very inexpensive project. Let us know if you try it, and if so, how it works!