Someone mention earlier that they move the laser to a holder on their gantry when it's not in use. Sorry, I can't find the post right now. I'd like to see a pic of that setup. They mentioned that it was on the same idea as the puck holder.
Here's mine, just a box mounted with double sided cushioned tape. Seems to work okay.
It took too long to cut my backing board for felt box bottoms. Well, I decided the only reason I used a backer was to keep the felt from stretching when cut. I tried cutting the felt by itself, and it cuts beautifully. I cut it @ 15 inches/min at full power. Even though the cut was Outside, I ended up adding a 0.015 Allowance Offset to take care of melting/shrinkage. Perfect fit!! 1mm thick felt.
I just went to Hobby Lobby to browse with the wife. They have felt sheets in umpteen colors for 50% off. The 9"x12"x1mm is normally $0.33 and the 2mm thick is $0.79. I bought 60 sheets of the 1mm for $10!! I think that's a 5 year supply for box bottom liners. What a deal.