u/ferojasb, u/Deanodirector I use these silicone pet mats in my resin area, they are easy to clean and the lip will prevent spills from running. https://www.amazon.com/gp/product/B07HBYGJCT/

I also use a funnel to pour my resin back into the bottles. I also periodically expose my IPA tub to my cure lights (or set it out in the sun) to cure the residual resin in it. Then I use the funnel with filters like these https://www.amazon.com/gp/product/B01LW5IAO5 to pour my IPA into a gallon jug and clean out the tupperware tub.