Yes I save & re-use paper towels until they're of absolutely no use any more , I also save the tinyiest piece a brass round stock , and my biggest issue is I'm a box hoarder, I get many more inbound than outbound...but you never know when your going to need "that box !".
regarding esbit fuel , I probably have 10 lbs of it now (as I never use it !) , many sellers praise the amount of esbit they have to send along with the engine , I have actually sent them a message on occasion & told them to just keep it.
Re:shipping peanuts, I have a supplier for that now , the Honda assembly plant on my route (massive place) has been saving these for me for a few years now & I have been hoarding them in 70-gallon bags upstairs in my garage for a while now as well, I use a lot of them as well 😉👌