I love the openness of this thread:
http://lampworketc.com/forums/showthread.php?t=186181
I kept meaning to try some of the tips in it...
Tip:
Use a cookie sheet as a work surface - you can mark it with the COE you're using and just swap out cookie sheets when you swap COE's. (Not sure where I heard this originally, but I love it - 90, 96, and 104 are all in my studio.)