In my bin, I always carry a small tool box.
Contents:
Hot glue gun/glue
epoxy putty
Gorilla Tape
elecitrical tape
scissors
rivet gun/rivets
strap material
snaps
white and black industrial velcro
extra push buttons
wire
wire strippers
cheap velcro for batteries
Sharpies
White paint marker
Extreme Velcro
elastic
washers
screws and nuts
clamp
mesh screen
shoe goo
wire connectors
For long weekend troops I also pack in a multi speed dremel and a small tool kit. The dremel worked wonders in Columbus, I was just gettign ready to go out when my thigh split apart at the seam, I dremeled a little hold and poped in a rivet and it was super strong and fixed in a flash.