Not everyone buys into a consumerist mind-set, either.
One of the handiest "tools" in my aquarium setup is an extra large cat litter pan. Easier to put small tanks rim down in it to soak the rims than try to keep draped rags wet, also great for soaking glass covers and other equipment. As well as rinsing substrate, holding/sorting plant clippings, etc. Cheap and nigh on indestructible.