I actually carry a rubber band for cdc dry flies…I think I saw Lance Egan use one once…but mine are blue since I’m so stylish…and they are free with my asparagus…
On one of my moving trips a gentleman at the rest area was standing there holding his fly open while the dryer blew down his pants. Couldn't figure out why...
Many many years ago one of my coworkers (who happened to be the laboratory safety officer) enjoyed shooting flies with long rubber bands....until one broke at the wrong end and tore a big chunk out of his cornea.
He endured at least a month of pirate jokes until it healed and he could jettison the eye patch.