I also carry chalk, cue, extensions and some sandpaper to shape / rough up my tip if needs be.
At home I have gel superglue, very sharp knife, cloth, linseed oil, spare tips,
If I was going to take anything to the club from the above it would just be the retipping stuff. After you oil your cue you have to leave it a while before adding any more and then have to leave the cue for about a week before the finish it properly cured (week figured quoted from Dan (totlxtc) so I assume that's right ). Will be oiling my cue for the first time when some time soon so I asked Dan for advice so I didn't mess up my cue.
It may make sense to keep everything in one place, but if you are carrying it all to and from the club every time you go, and linseed oil has no actual use I can think of while you are at the club, you are just carrying it around for nothing.
I also have some craftsman cue wax here, though I've only used that on my cheap cue, much prefer the oil finish on my cue to be honest.
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