Usually for embroidery and stuff, cutting threads.
I use them for rebuilding atomizers, cutting the cotton wick to size. I haven't used them much, yet. But first impression is, I manage way better to actually place the cut, where I want it (exact length and angle), than with small European...
Maybe putting them aside? Just a crazy thought. I don't understand people, that treat money as if it had some adverse effects on them which could build up over time.
Maybe best, if you don't accept money in the first place. Fewer decisions to make.