on the go, latest tech allows me to soil my mouse on any surface. Vomit-soaked commuter train butt padding. drugs-enriched shiny surfaces. Everything. Problem is, even just at home, those cute little teflon feet tend to a) get scratched and b) collect all sorts of stuff you didn't even know was there. dust. more, finer dust that clogs up everything. Hairs from you, your loved ones, your pets, your neighbours pets and random hairs you have no clue as to whom or what they once belonged to. Then there's the IKEA phenomenon, where your cute little mouse feet slowly but steadily peel off the top layer of wood/paint/something, which makes the mouse suck and the surface shiny where it should be dull and dull where it should be shiny.
So, after a century of going strong without no fancy mousepad, I got this:
http://pics.computerbase.de/3/4/3/7/7/6.jpg
ELECOM E-FORCE GMP20
and it's like finding out your car has more than just the "R" gear. It basically looks like a painted piece of plasticized baking sheet from above. The bottom side is shiny-metallic something that will stick - no glue! - to whatever surface you make its home. Very smooth working (and playing), very lovely. It's really thin, on a dark desk (black/charcoal/dark grey/...) it is virtually invisible, but makes quite a difference. I am using it with a variety of Logitech MX mice, and they all feel upgraded, even the ones that must soon turn half a decade old.
For some reason, the bigger one was cheaper, so I got that one and thought I could, y'know, cut it to suit my needs. Turns out, big is beautiful. I'll rather get another one than cut it up. Splendid piece of kit, hereby recommended!