I keep a lot of this in a tool roll and it takes up a lot less space so easy for weekends away etc.
Soft face hammer
Flush cut pliers (tie wraps) a quid at the market no gashed legs
Standard pliers
Decent small star screw driver for mech adjustments
A bottle of cable ends.
Headset press
File flat and round
Screw driver bit set, that includes torx bits for rotor bolts and small reservoir cap screws.
Star nut installer
Headset remover / drift
Nice crown race removal tool (or a very sharp one sided wood chisel)
Pedal spanner
Cone spanners
Nice set of drifts for knocking bearings out of frames hubs etc.
Mini grease gun or small pot of grease with a paint brush for greasing up parts to be fitted without getting it on your hands
At home I woudlnt be without my mini parts washer, work stand or my vice 🙂
Decent set of vise grips can be a good last resort tool for getting the rounded off rotor bolts out, as can a hacksaw for cutting a slot in a rounded bolt reservoir cap bolt and getting a flat blade screwdriver at it.