If you want to drool over pictures of washi tape and get ideas of what to make with it then you need a book on it! They are all in Japanese but I guess the projects are easily figured out.

“How to Use Masking Tape” (ISBN 978-4-05-404387-9) is available from Shimgraphica and Uguisu.

Kawaii Craft Making with Washi Masking Tapes is available from Uguisu who ship worldwide.

Book of Masking Tapes / Masking tape no hon available from Uguisu reviewed at melampyrum.
If you want even more ideas then check out these two flickr groups: tape your world and masking tape: what to do?.
Pugly Pixel have these free digital tape strips











