For the Noodle Ball, take a knee-high sock and stuff six tennis balls into the sock. Push the balls towards the bottom of the sock and tie a knot at the last ball, so the balls are snug together.
There’s a quick video demo below that will guide you through making one. Until you get used to the Noodle Ball you can use a swimming pool noodle. Buy a regular size noodle and cut it to the size of your upper back.
If you don’t already have a mat, I like Gaiam Yoga Mats because they are lightweight, easy to transport and really stick to the floor.
A Mexican blanket works great. A beach towel or couch throw also works.
Pick up a few golf balls from Target or any other store that sells regular ‘ol golf balls.
I like Sky Balls but any Softball-size ball will work. Pick up one or two.
Any strap will do. I recommend an extra-long strap.