It' s lightweight and easy to set up and take apart. It could be packed in a suitcase easily if you're traveling to a knitter's conference or seminar. The susan isn't modified in any way, so it can go right back in the kitchen when you're done. It works very well with my homemade ball winder.
Step 1: Supplies
Note: "lazy susan" is an Americanism for a rotating tray or carousel. These are commonly available in the kitchenware section of retail stores. Prices start at about $4US and go up depending on size. Mine cost $2, but I bought it several years ago on sale.
Step 2: Preparing the hangers
You may or may not need the pliers for this step; depends on how strong you are and how well your hangers are soldered at the twist. Some hangers are made of a more brittle metal, and a piece may break off during this step. Don't worry, there's plenty left for what you need.