You can also make a general donation to the US government, that is not necessarily used to reduce the debt:<p><a href="http://www.fms.treas.gov/faq/moretopics_gifts.html" rel="nofollow">http://www.fms.treas.gov/faq/moretopics_gifts.html</a>
I just bookmarked this. They need to have something like this added to tax forms. I'd much rather 'donate' my money to the debt than the Presidential election fund or whatever other things they ask if I'd like to contribute to.