|I've tried several paper materials for tracing my patterns, but they were either too thick, too thin, or too expensive. I was at my doctor's office one day and I asked the office manager if I could get a sample of their exam table paper. I tried it on my patterns and it worked great. Most patterns are printed dark enough that you don't have any problem seeing thru the paper. If you run across one that is too light you can go over it with a darker pen and then trace.
(I got a roll of exam table paper on eBay for $14.00 and it'll be a while before I need another roll!)