Introduction: Chain Holder (bicycle Maintenance)

Inspired by BBB chaingrip (chain holder) BTL-50 I've decided to make one for myself. That holder allows to work with chain without rear wheel.
I had old jockey wheel and spare skewer, the other bits and pieces are pretty much available everywhere.
I used:
skewer (doesn't matter front or rear any size will be ok)
jockey wheel
piece of steel pipe (good donor for example might be aluminum/steel pen)
pieces of wires (usually they used for wrapping cables but might be steel or copper doesn't really matter)
lock nut and old spoke (for optional hanger)
Procedure and final effect on the pictures. Cheers!