Energy gels
Gels are the scourge of the countryside. I find it baffling that people just throw the clearly non-biodegradable foil away. Instead of these I fill my water bottle with sugar and fruit tea (if I’m feeling that way). Not quite the hit of a gel but I can’t justify such waste as a weekend athlete.
Bike clips
Old school “trouser bands” rather then the cooler snappy things that are made from bits of plastic and self-destruct after a couple of months.
Edit: but they’re not very good! Will try them again.
Snacks
Pop some loose apricots from Taj in your jersey.