I would recommend a visit to
www.marthastewart.com and
www.marthastewartcrafts.com for ideas on how to use glassine paper. Martha has been renowned for her use of glassine paper for years, so I wouldn't be surprised to find a number of projects featuring it at her websites.
You might also try a google search using keywords "glassine projects" or "uses for glassine paper", for example.
HTH,