I also use an SS pot. I actually got a group of those cheapo SS pots for cooking, but found out the bottoms are so thin that all they are good for, cooking wise, is boiling water, b/c with anything else, the bottom burns. So I use them for soaping. Never had a problem.
I highly recommend silicone spatulas. Not the plastic ones at the Dollar Store - those will become hard and brittle.
Also, stainless steel measuring spoons, or a tiny glass measuring cup. I have found some at Big Lots that are about the size of a shot glass, and measure teaspoons, tablespoons, milliliters, etc. Some fragrances will melt plastic, so I always use stainless steel measuring spoons, or my tiny glass measuring cup, for fragrance oils and essential oils.