Every lab needs a whiteboard, so when I saw a nice piece of glass being thrown out when helping a friend with a clean-up I grabbed it to mount on the wall. But glass is heavy, and it's not particularly easy to drill holes in. With a bit of care though it can be done, and the result turned out really well.
View or comment directly on YouTube: www.youtube.com/watch?v=dKMQpeyuU7c
Yes, I said "conical" at one point when I meant to say "tubular". I didn't notice until checking the playback!