Some years ago, I was chatting with the gutarist in a cafe in Cape May, New Jersey, and I asked him how he switched between flatpicking and fingerstyle playing so smoothly. He had a little gadget that secured a pick to a short piece of rubber attached to his ring finger. It held it tightly enough that it didn't get in his way while playing fingerstyle passages, but loosely enough to grab it and use it.
I've never seen one of these devices since; it may have been homemade. Has anyone seen one of these? Where did you get it? Failing that, how can I make one of these?
I'm wall aware of pick holders of all sorts, and my current favorite is one that holds a pick or two to the headstock, but something like this would be wonderfully useful.