I like the GUM soft-picks. They probably work very similar to the Stim U Dents (which I had never heard of).

The soft-picks make a satisfying squeaky sound when your teeth are clean. I had hand surgery a couple of months ago, and switched to these. Don't think I will ever go back to string flossing.
As I live by myself, I can sit and soft-pick while I am watching TV. May not want an audience for that though.
They are made of silicone with little ridges.
They are available on Amazon, Walmart and most drug stores.