I attached my Think King cup holder today. Because it's soft and attached with velcro, I had doubts about how well it would stay attached, but I put a full large drink in it and off I scooted to shop in Walmart.
I had no problem removing the drink and putting it back (over and over and over again). The velcro held tight, and the cup holder is the perfect size for me.
As you'll see in the pictures, I've also figured out the best use for the Think King hook -- it holds my keys!
I feel like I've found a good, workable combination for me. I have a small purse with a long strap and I hook that over the handlebars and the purse rests in the fabric caddy. My drink is within easy reach, and so are my keys. I'm also able to leave both items attached when I fold my TravelScoot.
I give the Think King cup holder and hook big gold stars.
The Think King website is at: http://think-king.com/.