I've found a few ideas for you regarding using soap pieces.
"My grandmother used to (and still might) have a soap-compressing
apparatus. It was rather like a close-ended garlic press. Into it:
bits and ends of soap, all the stubs. Crimp them together and you
produce a fresh bar. Notch one for resourcefulness. But me, I keep
on fusing the soap pieces by hand, every so often pressing them tight
until they bond. Sometimes the bond breaks; I grab up the evasive bit
from resting place near the drain and go again."
Make liquid soap with them
"Do you end up with little pieces of soap? Use them to make your own
liquid hand soap to be used in a pump dispenser. To make, combine in
a microwave safe container bits of regular soap to one cup of water.
Microwave until soap is melted and let sit overnight. Add to hand
pump. Add water as necessary."
"To reuse bits of leftover soap, buy a container of glycerin soap from
a craft store such as Michael's (they are the cheapest I've found). I
get the kind that can be melted in the microwave. Find a soap form
such as a small oblong plastic container and spray it with pam or
whatever the glycerin manufacturer suggests. Pour in a thin layer of
melted glycerin soap, then put the leftover bits of bar soap in
another layer, add more melted soap. Alternate layers ending with
melted soap until the bar is as big as you want. This kind of soap
lasts forever because the soap bits are usually quite dry and don't
melt during use."
[This method also creates artsy looking soap]
Another homemade glycerin soaf "loaf" recipe
"In a recycled container, save all the tiny pieces of bar soap that
are too small for use. When you have several cups worth of the pieces,
chop them up in a blender on low speed. Add a bit of water until it
attains a pudding-like texture. Place in a recycled plastic container
and use it to wash hands. Be sure to keep the lid on the container or
the soap pudding will dry out."
"...place the soap chips in an old nylon sock. Press them down into
the toe and tie it off. Hang this soap sock under the garden or house
exterior taps where hand washing will occur. Simply scrub your hands
with the sock."
[or use a small, net bag to help exfoliate your skin, but the nylon
hose (or to-the-knee hose) would be much softer and could be used in
the bath or shower sort of like a "soap on a rope"]
Easy direction for nylon soap balls
Soapy scrubber using nylon hose
"Make a soapy scrubber. Place small bits of leftover soap into a
square of nylon netting, fold the netting so there are several layers
around the soap, then tuck in all the edges with heavy thread. Use for
scrubbing collar stains or cleaning hands after gardening or
Recipe for oatmeal soap on a rope using soap chips (you could probably
leave out the oatmeal and use the method for regular soap on a rope)
I hope one of these ideas will assist you (personally, I like the hose
idea as it seems the easiest and the most efficient). Should you need
clarification, please request it and I will be happy to respond.
compressing soap pieces
compressing soap bar
fusing soap pieces
compacting soap pieces OR slivers
reusing soap pieces
reusing soap chips