Just about any treadmill with arms will do, which is most of them. I use a piece of wood that's meant to be a shelf. I put velcro on the bottom and on the arms of the treadmill then put a laptop stand on the shelf.
It takes a bit of getting used to for programming but it's done wonders for my sleep when I walk (slowly) a couple hours every day.
It takes a bit of getting used to for programming but it's done wonders for my sleep when I walk (slowly) a couple hours every day.