1. 1 piece of fabric remnant 2 ft. by 7 3/4 ft (or slightly under the height of your ceiling)
2. 6 inch PVC pipe (You can also do 4 inches, but it is VERY hard to turn inside out and not recommended)
3. Wooden base
4. Sewing thread and needles
5. Super glue
It is also helpful to have a wooden board to spring open the PVC Pipe while you are pulling the carpet onto the pipe.
Step 1: Make the PVC Groove Tube on a Table Saw (3/4")
You wedge this open while putting on the carpet so that you can put the extra fabric in the groove.
Step 2: Shopbot/Turn the Wooden Base
If you have a heavy cat, you can attach this base to a heavy piece of concrete, sand, etc.