1) When you make a stock, line your strainer with a few sheets of cheese cloth and when you strain your stock it will be nice and clear.
2) You can make your own "sour creme" from low-fat yogurt by placing some in a strainer with cheese cloth, placiing it over a glass bowl, and setting it in the fridge over night. It really works pretty good, and it's better than the fat-free stuff by far.
3) Place any spices for a soup or stock that you want to remove prior to serving (bay leaves, fresh thyme or rosemary, pepper corns, etc.) in a little tied-up cheese cloth. Makes it easy to remove later.
4) When you sand furniture, use some cheese cloth to remove the finest dust (final wipe-down).
How's that?