Racing roadkill
Guru
The washer / nut that fits on the inner tube valve stem, and stops the annoying rattle of the valve stem against the hole in the rim. That doesn't apply to one of my bikes though, obvs.

I rode to a girlfriends house when I was a teenager, I could even tell you what bike I was on.
. Keys, phone, wallet, credit cards, home address, cash - everything was in that bag
. To say I was worried would be an understatment, and when I told Mrs Cisamcgu she was less than pleased and told me I wasn't mature enough for a Brompton. 
