sticky pad??

[DonRotolo]

Try a Google search on "Sticky Pad".

[Corey Oostveen]

I am fairly sure it is the non-slip rubber pads used to keep electronic devices from sliding off of your dash.

Take a look: here

[PAR_WIG1350]

Non-Slip Pad is a material often used to prevent carpets from moving
like this: http://www.naturalarearugs.com/rugpads.php/
(the first one)