I carry an adjustable wrench, screwdrivers, 1/4 drive socket set, allen/torx wrenchs, small needlenose etc in my saddlebags for long trips. Raingear too.
I also carry a tubeless patch repair kit complete with plugs and CO2 cartridges. For tubed tires....a cell phone and luck which I never had that's why I switched out my laced rims for mags.
Parts - fuses, clutch cable, extra headlight bulbs, CO2 cartridges, bungee cords, tie wrap fasteners, jumper wire.
