At this point we've shown you so many DIY laptop stands that you really have no excuse to still be hunched over while you work. But, if you're still looking for a better solution, may we interest you in this hack, which is totally free if you have a shoebox laying around.
Flickr user MJC came up with this solution using an old Puma shoebox, a ruler, a box cutter, and some tape.
MJC posted a photographic tutorial, which is pretty easy to follow along, on Flickr. Add some wrapping paper or paint the box and you've got a pretty sweet stand for nothing (plus you've given that cardboard a second life!)