What tools to carry when on fixed?

[jogler]

OMG, I am so proud what I did with drill and a round file, see:





Fits neatly on the bottle cage bosses.

that's exactly what I've done 

[Nonsteeler]

The Jethro tool is awesome, but pricey.  A good alternative is one of these.

The 'problem' with one of these, ie stubby spanners, is that they are not allowed as cabin baggage on an air plane. Everything else in my tool kit was ok - beforehand I was a bit worried about rubber glue. This is of course only a problem if you only take cabin baggage with you ... and use the bike to travel to the airport.
Another issue I had with my ex-stubby 15mm spanner was that it is too wide for removing Shimano's M520 pedals (and my 8mm allen key on the multi-tool wasn't up for the job).

[Crumbling Nick]

I use the same tools on both my bikes.

A 6mm Allen key is adequate for the the screws on the fixed rear hub - 20Nm is enough for me on steel dropouts.

What's all the fuss about?

[Buzz]

An original Campag track spanner.

Just to inspire jealousy in people by having one when they don't.