Either you guys buy very expensive coffee filters or super cheap paper towels. I can buy 120 filters for less than $1.50. Paper towels are nearly 75 cents a roll for 'decent' ones.

Anyhow- I use filters to make greek yogurt from 'normal' yogurt. A cost savings event all in itself.

I also use them to separate glass things that I might stack, and at times have used them to pick up odd things on the floor.