I have noticed that American offices do not use blu tac, or its clones.

American office workers stick to cork pin-up boards, felt and carpet pin-up boards, magnetic boards and sticky tape. Which is all fine and good, but they deprive themselves of the awesomeness that is blu tac.
Firstly, blu tac is a useful adhesive. It can stick an object (whether flat or 3D) onto another object (whether flat or 3D) without permanently modifying either (i.e. no pin holes in either). The stickiness is quite strong – more than a post-it note and arguably more than a pin (as using a pin with paper leads to the paper ripping).

Secondly, it is reusable. Although it has the consistency and adhesive power of bubble gum, it can be removed from objects and surfaces without much force or damage and reused. All that is needed is a little warming up but playing with it in one’s hands like play-doh.

And thirdly, the blu tac can also be moulded into all manner of blu tac sculptures , lest you do not have any work to do (as you are super-efficient). Oh the many works of art that I have seen through my years!

I just find it strange why blu tac has not made it into the American office environment