It's a cliché posting, I know. Sorry for the picture quality.
- a spare tube
- several speed patches
- tire levers
- a schraeder-to-presta adapter for gas-station pumps
- a small multi-tool
- Park Tool's brilliant allen key and wrench tool
- a chain tool
- a FiberFix Spoke
- a rag to keep loose parts on
- surgical gloves
- front and rear 'be-seen' lights for unforeseen delays
- a reflective sash
Anything I cannot fix with this, I fix with my cell phone or my wallet!