Re: Any tips for 'useful fidgeting'?
There were years when I hardly played the drums but practiced via "fidgeting" on a daily basis while driving my car.
I've owned cars with automatic transmissions that have a nice place to rest your left foot that makes a pretty good substitute for the sound of a bass drum. I started messing around playing beats with my fingers on the steering wheel and learned to do all the bass drum patterns with my left foot.
I swear, I gained more from learning that specific coordination than I could have imagined. It proved really useful to me when applying it to the drum set. Besides making my left foot stronger, it increased my independence with my feet a great deal. Especially mastering left foot patterns for the hi-hat. Working three-way voicings against the ride cymbal pattern seemed pretty simple thanks to all those hours fidgeting in my car.