I wanted a support for carving netsuke, but didn't want a fixed bench peg, the traditional way carvers hold their work to steady it when carving. I took an idea from a metalworker's pitch bowl, but scaled it down considerably. I found an almost hemispherical 5" metal bowl with a lip, hammered it into more of a hemisphere, part filled it with lead fishing weights, then filled it with white tack. The support for the bowl was made with four pieces of a thick scart cable, each taped together with insulating tape. The resulting rings were placed on top of each other and the whole ensemble covered with more insulating tape and two courses of looped stringing. It was then covered with cotton tape to finish it.
The carving is placed on the white tack, or, rather, a pit is dug in the tack, making a secure hold for the piece being carved. The contraption works and is heavy enough to hold the piece steady, without the bowl support slipping, when carving. Even with the lip, the bowl tilts as much as I'll need for carving purposes. Cost? About £5.00 and a couple of hours of work. Of course, I've now found out that there are small jewellers' pegs that can be clamped to a workbench and removed when not being used, but I'm satisfied so far with the d-i-y arrangement.
