reusing mixing cups

i love using resin but hate how much i have to throw away after i’m done (gloves, mixing cups, stirring sticks, plastic under the pieces to cover the table). is there any way to reuse the mixing cups without worry of it affecting future resin?

i’ve sometimes had luck peeling out the old stuff and have also tried cleaning with alcohol but am not positive either method doesn’t potentially have curing consequences for new batches. i’m currently using easycast resin but since i’ve had such poor luck with reliable curing, i’m hoping to use more jewelry-grade epoxy resin, or maybe even switching to something other than epoxy. (thanks for the helpful resin comparison chart, katherine!)