Like RDS1220 said, coffee filters are about the best household item you're going to find. I'm not too keen on the use of a Q-tip because the cotton likes to clump or leave pieces of lint behind. As long as it's soft and has a very tightly-knit construction, then you cannot go wrong. For the solution though, I'm a big fan of heptane, it evaporates within a second or two and leaves absolutely no residue.