"Everybody needs a thneed!"- lorax
Step 1: Loom!
Make 4 arms out of any soft yarn. It can be as long as you'd like but they should all be about the same size.
Step 2: Knit or Loom Them All Together
Leave a circle in the middle
Step 3: If You Are Going to Loom Them Together.
Add the stitches from each "arm" or "strip" on the the yellow loom. Then keep looming so that you loom them all together. When you are done cast of and you have a thneed!