At the BFFI I clocked someone using a hair stacker that appealed to me, I didn't pick one up then but I recently bought one to see how I get on with it:
Initial impressions are great, the one I've bought is the medium size but there is both a small and large available.
I really like the solidity/weight/industrial finish and the padded bottom certainly cuts down on the noise when 'stacking'
Recommended
H