Step 1: Materials and Tools
Tin (I used an Altoids Gum tin because it was small and compact)
Electrical tape (any tape will do)
Small piece of cardboard
Measuring spoon (or something similar)
Step 2: Freshen your breath...
Step 3: Making the tension arm....
You are going to bend the wire to fit as flush as possible in the tin, and have two notches on each side to hold the rubber band in place (see picture)
I used a pair of pliers and a small vice to get this step done. You may need to try a couple of times to get it just right.
Step 4: Cutting Spoons?
Step 5: Holding the arm in place...
To do this, cut a small piece of cardboard and wrap it around the base of the spoon. While still on the spoon, wrap a couple turns of tape for added strength.
IMPORTANT: Do not tape the cardboard to the spoon; you want to be able to remove the spoon. You want it to be snug but allow for movement.