Not so much my bag, more my extended kit bottle (you can open it from either end)
Starting from the top left corner and working clockwise towards the centre:
Handwipes
Co2 inflator.
15ml of Factor 50 sun protection.
Park Tool self adhesive patches.
Inner tube.
Coin bag full of latex gloves (Its the last thing that goes in and acts as dunnage, preventing stuff from rattling within the bottle).
Inner tube 2.
8spd chain link.
Lid.
Bottle.
Lid.
Gear cable.
Leatherman CX.
Bungee/lanyard for withdrawing the above CX from the depths of the bottle.
Topeak multi tool.
Abrasive patch.
10spd chain link.