rubber
the sole
This depends upon what kind of ground you are walking on. A rubber sole is more practical in areas that tend to have a lot of mud, puddles, and snow. A leather sole is considered more traditional and can be more comfortable.
Use rubber as your sole and clothe as your shoe thing
In practical terms, this usually means rubber or plastic.
A plimsoll, tacky or sneaker.
Depends on the surface of your sole on the shoe. Polished leather or rough rubber-sole! Leather: You slip. Rubber brobably make marks on the surface
Try hot gluing on a rubber sandal. Simply cut off the strap and glue the sole to the slipper.
You can buy an rubber stopper at widget-co.com. They are not that expansive ethier
yes, you can buy metal rubber at your local wal-mart
Waffle Iron
In practical terms, this usually means rubber or plastic.