You can get deli cups from ARS Caging online in packs of 500. Once you get them bring one in to Home Depot and look in the plumbing section, it's actually a big PVC coupler that you want. There is a size that is close but doesn't fit quite right and the deli cup falls in the PVC a little, if you look around you'll find one that fits perfect. I was in the same boat you are in (no time) and I saved all my deli cups. Now I finally found the time to wash them all. I use dish soap and bleach and have reused them at least a dozen times and after washing they still look brand new.