This trick is great for stage performances. I do like the addition of the bag. I was able (with
difficulty) to construct it myself, but have a problem with the "IN" falling off. Repositional Glue
Stick doesn't seem to work on paper bags.
This glue sticks on any paper/cardboard without any problems, and goes off without any any residue, even after 30 years. (I really tried this):
https://de.wikipedia.org/wiki/Fixogum
Warning: In contrast to most "normal" rubber cements, the solvent in Fixogum contains a high proportion of acetone. So never use fixogum on polystyrene foam and painted working surfaces!