Diapers... I just read a post in another thread from a guy who'd made coffee in the army with a (clean) sock for a filter... I suppose there is room for this line of thinking to get even WORSE...
I use them to strain stock, as mentioned (even for a few quarts, btw). But also as a general wipe-down cloth and hand towel.
I buy them new, give them a wash to get rid of the sizing, and voila! They're relatively inexpensive, reusable, versatile, and last two-days longer than forever.
I get a few looks askance for that, but new, never used urine specimen cups are not only clean, they're certified sterile! And, the screw-on lids are designed to prevent any kind of spillage, seepage, etc. Heck, they even have measuring gradations on the side! :lol:
I use cloth (gauze) flatfold diapers, too. They are much stronger than cheese cloth, can be washed and boiled prior to re-use. I mark them "stock filter" in indelible ink. They are large enough that you can merely tie your vegetables and herbs in them.