@nprofile1q... - Oh gosh... I mean, the first time I did it all I had was a leatherman and some allen wrenches, lol.
Umm... the ideal kit I'm building out contains (will contain):
- Portable folding bike stand
- Set of allen wrenches/hex keys
- Set of wrenches
- flat head / philips head screwdrivers
- Cable housing cutter
- Cable wire cutter
- Channelocks
- CLP (not WD-40, WD-40 is terrible for bikes, it gathers a lot of gunk. I use CLP instead.)
- Rags, Disposable Floor cover/pad for oil drips.
That covers pretty much everything I need.
If you have time or have partners, you might bring enough stuff to do bearings cleaning and greasing or other more complex stuff if you like.