craftgrrl | Soap/picture display questions

I was making some lollipops from the usual plastic molds that you buy at a craft store, and I wanted to make soap too. However, the instructions said they weren't intended for making soap. I'm not planning on actually MAKING the soap from scratch but melting down left over bits. I thought maybe the lye or something was the problem, so is it possible to melt down regular soaps into plastic molds? (This paragraph sounds really confusing and badly written looking back at it, so excuse me.)

Also, I have four or five photbooth strips. They're cute pictures but I don't know how I should display them. Any ideas?