I have seen two types.
The others more like a long strip. rolled up
I have an idea to use my little crazy patchwork sampler. Add another layer and wadding so there's enough padding so I can use it like a pincushion.
With some squares as 'pockets'.
I have made a start...not quite as neat as other peoples but its very...erm...me.
The back of the panel sewed up sides but left small gap so I could pull inside out.
I trimmed the excess first though.
Sewing in pincushion. Also added ribbon loop and tie next to it for scissors.
Added lots of different sized pockets. Including one that was thread reel sizes so I can use it for embroidery or general hand sew stuff.
Rolls up and ties with ribbon. Still got a few more pockets to add but its just about finished.
Had pockets for cotton reels and embroidery thread. Pin cushion and a little scissor holder.