aAlthough we have used cloth napkins and kitchen towels instead of disposable paper products for years, we've had an enormously difficult time getting past our addiction to disposable scrubby-sponges for washing dishes.
We now have some answers:
The blue thing is the plastic netting our seed potatoes came in this spring. We've been using it now for a couple of months and it is in great shape. While it is ultimately disposable, it was saved from the trashcan where it could have gone immediately after planting the potatoes. It provides absolutely superior scraping of cast iron pans, etc. and has lasted extremely well. Because it is so easy to wash out well, we don't worry about the germs that can grow so easily in disposable sponges. We have another one waiting in the wings when this one finally wears out.
The two green squares are a knitted cotton washcloth that David made and a woven potholder square that Son made. Both are absolutely fantastic--with a lot more traction and absorbing ability than the cloths we had been trying to use before.
Addiction number one broken!