As we had a lot of fun with the spinner in Calgary thanks to @mafiosa, I am now owning one as well. My new X-mas gift needed some fresh air to try it. I just ignored that it was a liitle bit too cold for the rubber band to ensure a full 360° turn. But so I got more pics on my roll (a little bit unplanned). As you can see: concentration is everything and also the right technique ;-) No clue why I always had my fingers like this, but I am still learning.