I started a thread about decorative soaps a while back. I was starting to use one of mine up in the bathtub because I had had it long enough!!! It was a chicken...and you'll be glad to know I did use it up, as well as two pears and a pinecone.
Now I'm working on a second pinecone and then I have a nest of robin's eggs. Apparently I went through quite a decorative soap phase.
I keep a jar of liquid soap in my one guest bathroom for everyone to use. I do have another "guest bath" that has only bar soap. If I know I have guests coming I'll put a fresh one out and move all the others so people know the one in the soapdish is to be used. Once the company has used it I finish it up in the bathtub/shower and put another decorative one out - if I think about it.
I don't want to imply that moving the soap around in my house is a fulltime job. It's just that I used to buy them as souvenirs when I travelled, etc and I had quite a lot of soap built up. I don't even bring the Mickey soap home from WDW anymore - too much soap!!!!