for the head: a working helmet.
for the eyes: pair of shades.
for the hand: pair of gloves.
I guess clothing can be optional.

back pockets have: spare tube coated in baby powder in a zip lock bag. three tire irons, patch kit with two tubes of glue, two or three patches, a small sand paper around 80 grid, two CO2 cartridge, one CO2 pump, about $10.00 in cash, cell phone, Luna bars. Hex key for my seat tube clamp. and if its cold outside, I also carry my arm warmers or be wearing them. don't have a saddle bag or bento box on my bike.

On my wrist I have my road ID.

Carry one or two water bottles depending on the length of the ride.