Paper towels/napkins

Replace paper towels with washable cloth towels or "unpaper towels." Keep a basket of them near the kitchen and toss in the laundry after use. The average American household spends $180+ per year on paper towels.

Cut up old t-shirts or towels into paper towel-sized rags. They work better than paper towels, cost nothing, and keep textiles out of landfills.