Happy Birthday!! I saw one similar just last week. My Aunt's friend brought it over to her house to tie off a few quilts. They had it set up in her basement. It was very solid/sturdy. Didn't take up too much space. The great thing about it was that it could easily be taken apart for moving or for storage and reassembled just as easily. Someone had made it for the her friend. I asked my Aunt to find out if there were pattern, or if he made them, what he would charge. Haven't heard back yet.
Linda