I have lots of soap scraps that I want to turn into a bar. How?

This is a nice video on it.

https://www.youtube.com/watch?v=K9Xemir-uhA

shred them with a cheese grater or a food processor, add 'just' enough hot water to form a stiff 'dough' out of the goop, and press them into whatever you want to use for a mold. after a day, you can usually turn it out of the mold, slice it into bars, and let it 'cure' (depending on the kinds of soap, you can leave it out to dry for a week or three - the more 'hard milled' soaps, the harder it will be when cured)

another option is to make a 'soft soap' that you keep in a pretty jar...this works best if it's all similar colors of soap - yellow dial and blue zest do not make green, they make mud.

I usually put them in a plastic container with a little water and something heavy to weigh it down. Eventually it builds up and with different brands and colors it looks cool, If it don't slide out, break the plastic. Have done many this way.

Rather than do all the work of making a bar, I put all my soap scraps in a little mesh bag and use it in the shower that way. The mesh bag holds all the scraps - it's so easy!