I've (VERY CARFULLY) used a lighter depending where I got glue stuck. Not direct flame, just near it to get the heat where I wanted. Also have heated up something metal and scraped glue out too... (if it's in a small place, I've used a stick-pin).
Get creative, lol, but BE CAREFUL!
-Jennifer- Full-time working mommy to Connor (August '09) and Maia (June '11)
Please forgive my typos, I'm often on an iPad which is difficult to edit (if I even noticed it changed a word