Has anyone out there tried the decoration tape girls use on their nails:
http://www.transdesign.com/Nail%20Ar...ing%20Tape.htm

$2 for 55 feet, lots of different sizes down to 1/64", seems like it would be worth a try.

Haven't really figured out if the following would work either:
http://www.suppliesnet.com/Graphic-Tapes-Gloss.htm#

We have a hard time finding the original Chart Pak tape around here and when you can find it on the web, it is sometimes at a premium price.