What's in your toolkit?

I've started just carrying an old tea-towel that is acting as a tool-wrap.

The contents when I ride are simply:

• pedal spanner/wheel nut wrench
  
• allen keys
  
• innertubes (two)
  
• co2 thingies
  
• tyre levers
  
• a very small leatherman (screw driver, knife)
  
  

It's pretty small as kits go, but enough to do anything I would need to do on short (10 miles) to medium (60 miles) rides.