I was about to purchase a soap pieces saver from the internet to help save money on purchasing soap when I realized I could recycle small soap pieces on my own by melting soap pieces in the microwave. All you have to do to achieve recycling old soap pieces is to combine small soap pieces and slivers in a plastic bag then pop them in your microwave to melt soap pieces together.
The results were excellent! All you need are 4 or 5 soap pieces to make what amounts to basically a brand new bar of soap. Mother Earth will thank you!