Clean windows and mirrors, because they are lint-free and leave windows sparkling.
Cover bowls or dishes when cooking in the microwave.
If you break the cork when opening a wine bottle, filter the wine through a coffee filter.
Coffee filters make convenient wrappers for messy foods, like tacos.
Keep in the bathroom for razor nick fixers or strips for waxed eyebrows.
Prevent a popsicle from dripping, poke a hole as needed in a coffee filter.
Put a few in a plate to soak up grease from fried bacon, french fries, chicken fingers, etc.
Line a plant pot with a coffee filter to prevent the soil from going through the drainage holes.
Place chopped ingredients in a coffee filter on a kitchen scale to weigh.