Reference LEL kit list, you're having a laugh, aren't you?
2 spare tubes, allen keys, chain link tool, spare links, spare M5 bolts, arm/knee warmers, rain jacket, long sleeve base layer, bonk rations, errr that's it.
Arrivee Number 112 Spring 2011, Page 42, Paragraph "Did you have a drop bag"
If it does not fit in the bag you wear it, or have it your back pocket. Anything more than that you don't need.