I used a cheap aluminium walking pole (which I already had), a quarter-inch diameter bolt, a few centimetres of 2mm paracord and a 5g "Smart Hack" sachet of black Sugru
Leatherman multitool, rotary tool and various small pointy things that came to hand.
On the subject of materials, allow me a small off-topic rant:
Always buy your hardware from a proper, local ironmongers (hardware store). They know what they are doing, and they know their stock.
I bought the bolt for this Make from my local ironmonger. It cost me 7 pence, and is exactly what I needed.
My father has no local ironmonger, just a branch of a large chain "DIY" store. When he needed a small hook a few days ago, he had to buy a bag of five, they cost £2.65, and the first two snapped when he tried to screw them into the wood.