What needs an adjustable spanner?
multitool with chain tool, t25, and screwdrivers, thats 99.9% of bike jobs sorted. Puncture kit and pump, and spare tubes, mars bar, thats the camelback essentials sorted.
tire levers are for people without mad tire removal skilz
Cables can be cut with a cigaret lighter, a hammer and a screwdriver if your clever enough 🙂 Failing that, cutters and pliars.
Then i'd say, cassette removal tools (spanner, whip and cracker)
Then Chainset removal tools and hub bearing service tools.
Brake bleeding kit
Thats maintenance sorted, next up is bike building and nice to have stuff. So a bike stand, workbench, vice, hammers, headset press, a good file, and workshop tools to replace the multitool.