Barrel/oil drum on the cheap.
Cut a strip of paper 22mm wide and 210mm long (short edge of normal printer paper 80gsm) AMOS glue stick it around a AA battery, dont glue it to the battery, slide this tube off and leave it overnight to set, they are quite strong.
Mark 7mm in from each end and draw a line around for the wire, I BluTac a pencil to the desk and rotate the barrel to mark it.
I used solid core network/computer cable, strip off the plastic, wrap it around the battery to make two rings, use a tooth pick to drop super glue on the wire and draw it around to cover the whole wire.
PVA glue a 1mm wide strip of heavy green paper top and bottom
Use the same battery as a template to cut out two heavy card circular ends, make a small ring of PVA glue around the inside of the tube and carefully insert.
They easily squash if you want a damaged look.
Credits & Acknowledgements
Original Author: Bugbait_NZ
Spell Checking / Editing: Pendrake