Here's a great solution to the age-old problem of soap scraps that don't get used up completely. Felted soap. Here's a little background: warm soapy water is used to make wool into felt. It causes the wool to shrink and become a single mass, depending on how you form it while it 'cures'. The idea behind felted soap is to felt wool around a bar of soap. It then shrinks with each use and gets smaller along with the soap. The felt is also a great scrubber besides being helpful in eliminating the 'slippery soap' issue!