BLU-TACK is a tacky, flexible, resistive damping
compound typically used in audio as coupling between
speakers and stands. It is primarily used between the
bottom of the speakers and the top plate of the stands.
The mechanical coupling is similar to the results
obtained with spikes but without the scratch and damage.
Additionally, since BLU-TACK adheres to both surfaces,
this serves as excellent speaker protection from
shifting or worse (falling from the stands) if knocked.
The BLU-TACK coupling can be removed by rotating the
speaker on the stand. It can be reused.
BLU-TACK has many other uses such as holding up
posters, cards or photos on a wall. It holds parts
while soldering, holds screws to the tip of a
screwdriver, even create art, etc. Do a search
on BLU-TACK and you'll see.
One package is enough to do many pairs of loudspeakers
or for other things too.