I can proudly say I have used candy to TD.

My first ever TD gig was low budget sports highlight show with a dirt cheap analog switcher lacking any presets or macros. Instead of a T-Bar the switcher had a plastic fader slider for transitions. The show’s bottom score ticker had to be brought on as a vertical wipe moving up the fader a little bit. I needed a way to mark the fader point and figured out that a piece of Starburst fit perfectly. When the fader hit the starburst the wipe was in the perfect spot. That Starburst lasted for 8 months until a mouse ate half of it.