Tank bag blanket
 

For those of you who do not want to scratch your tank when using a tank bag try an Oxford Blanket which is a rubber mesh that sits between the tank and bag and works very well! There is also enough to use on the back of the bike so there is no need for any sort of load or bag to damage paint work.

I know some of you know about it but not everyone does.

Sounds like a non-slip router mat to me

http://www.screwfix.com/sfd/i/cat/44/p3041944_l.jpg

http://www.screwfix.com/app/sfd/sea/...1&cd=1&x=0&y=0

Probably the same sort of thing but in black