Great suggestions guys!
I typically carry a spare tube, tyre levers, multi-tool and CO2 canister, so most of the above suggestions sound like they’ll do that.
Any specific recommendations for something that’s easily moveable from bike-to-bike?
I’m not always heading out with a full backpack full of gear, so it’s nice just to peel a saddle bag off one bike and strap it onto another knowing I’ve got the bare essentials even for a short ride.