I just bought an acupressure mat off Amazon.
There are many versions, the one I chose was around $32 delivered.
The bristles are hard plastic, and they can scratch/rip if you "slide" on the mat.
It takes several seconds to get used to it at first, but you build up tolerance. I've only used it twice since yesterday, and just a few minutes each time.
I'll get up to 10-15 minutes by next week.
Once I get off, I feel the blood circulating and tingling in my back and neck. I like it!
Addendum: It comes with a pillow as well. Don't turn on your ear!!
More reviews coming as time goes on...IN65Mat
...Give it a go!