Rings is a resonator. It takes any input (instead of just gates to strike the resonator, like karplus strong), and adds all kinds of charming musical sounds to it. Many people use it as a 'black box' without really resonating anything else but its internal resonator. However, this is because it sounds really good without anything else.
I stumbled on a Rings easter egg the other day, which included a list from creator Emilie Gillet which contains 10 examples of cool Rings patches that never made it to any video (at that time). I did eight of them in this video so I hope you hear something new and something worth trying out. And the easter egg, obviously, which is a big hidden feature. Here's the link tot the document.
https://www.infinitesimal.eu/modules/index.php/Mutable_Instruments_Rings
NOTE: you can exit easter egg mode by repeating the procedure to enter it.