Quote Originally Posted by Scrap
The smaller the better, you can make your own for £5. get 3 metres of elastic rope and a solid rubber ball, drill the ball put the elastic through the ball knot either side loops either end away you go. Terrific little tool.
Quote Originally Posted by Scrap
To answer gyrokai's question.

Get some 15 mil elastic about 10 foot or three metres, get a small rubber ball size of a tennis ball, drill a 16 mil hole through the middle of the ball. Whatever height you want it to be put a knot in the elastic, this will stop it from slipping. Put a loop in the elastic either end and away you go.

It is brilliant, I have been using it for the last 25 years.