Maybe not so new, but for me the percussive elements of playing are becoming an important part of my sound as it develops, mainly on the bass side. Beyond notes this can add a drive and rhythmic pulse that I am really starting to enjoy and do more spontaneously, and there are several ways to achieve this I find, either with the thumb or R hand fingers, sequentially the two can be a little more fluid than just using one or the other, or target different strings. All good clean fun. But I think there is much more to find yet.
With the killer virus having left me
we'll Catch up for more in the near future. 
! The coordination going, for example, from index(root)-middle(fifth)-ring or pinky(tenth) and back down in opposite order can make you sour up your face like you just popped a "sourhead" in your mouth. Think strumming an acoustic guitar or mandolin down down up up down up down down or something like that and imagine arranging arpeggios that way. Headache city at first, but I bet one could get fairly adept at it with repetition.