This is an easy to make yarn swift; no measuring, cutting or gluing needed. The only tool needed is pliers. It took me 15 minutes to put together. The materials (coat hangers, duct tape and lazy susan) are things that many of us already have, or can be borrowed or purchased very cheap. The total cost was at least 90% less than the cheapest commercial swift I've seen. Granted it isn't as pretty as a real swift, but functionality was my goal, not aesthetics.
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.