Hazel-I just used a piece of cardboard. Soapqueen has a video on combining using one of her molds(expensive) but, I couldn't find it. I use what I can around here.
Pamela- That is what soaping is all about. Trying new things. My friends can't wait to get my first batch of tobacco juice soap so they can say they actually washed with tobacco juice. I just got done shaving my head with it.