Originally Posted by
Bob Ross
Yesterday I needed a Phillips head screwdriver to tighten up a taillight mount, so if I had a tool with 6 or 7 hex keys and a screwdriver that'd be ideal.
Perfect for 99% of use cases is the SKS Tom7, and includes a T25 which is now more prevalent for a number of parts:
A lot of what should be carried depends on what your rides look like. Are you going to remote places where there's no civilization or towns that have bike shops, or areas where there is no cell service? Are you doing point to point rides or doing a loop to return to where you started (in which case you're never further than half your ride distance from where you started or home)? Carry more if these circumstances exist. Carry less if there are other options that in a rare instance could be relied upon (Ubers, bike shop fix, etc).