plastic free mouse pads?

What do people use for mousepads that is plastic free?  

I don't use a mouse pad.  My mouse just runs around on my wood desk and seems to work fine for my needs.

Edit:  You're talking for a computer mouse right?

I have a very fancy leather mousepad from one of my favorite designers. I'm sure you could find a leather one cheaper elsewhere though.

You used to need a good surface for the old kind with a ball, but with the ones that use an LED (which you should be using since the ball type ones are so old they are like dinosaurs) then all you should need is a surface with enough of a pattern.

The folding plastic table I used to use as a desk has a surface that isn't quite good enough, but even a sheet of white copy paper had enough texture for the sensor. But with my new hanging wall desk, the surface has a wood-like finish so that has enough texture.

I do dislike using a mouse pad because it takes up more space than needed.

I've got the mouse that I can use on any surface and it is also cordless...the downside is that it takes an AA battery.
The battery lasts a long time though and I use rechargeables.

I like it because I can easily switch hands and computer positions without being limited to a mouse pad or the length of cord.

I used a cork pad that I cut from an old wall corkboard (for pinning paper to). The cork mouse pad worked fine but it crumbled with daily use and only lasted about a year.