And this is where UL starts to get obsessive if not downright ridiculous. Not bringing things like patches and rudimentary first aid to save literally grams?
I agree on the patches, but on the first aid, most first aid kits people carry are pretty worthless. Also folks typically think nothing of going for a 50 ride near home without a first aid kit. I carry a few ounces of first aid stuff, but truth be told could get by almost as well with improvised stuff. For most wounds of any severity a clean tee shirt or sock and the duct tape you wrapped around your water bottle will likely work better than what is in the average first aid kit, which typically isn't much use on any but the most minor injuries. The only things in my first aid kit that I'd feel bad about leaving behind are benadryl, steri-strips, and CA glue.