Preferably non-hurty ones
There are certain standard things that I find quite awkward to do consistently, or for any length of time, due to a lack of reach and/or my little finger 'curling in ' rather than 'poking out' on my fretting hand.
e.g. a fairly standard power chord shuffle (e.g. for a G chord, index finger third fret E string, ring finger 5th fret A string, then adding little finger 7th fret A string for the dum-da-dum-da-dum stuff) - it's OK higher up the neck, but on a G or an A is a bit too much for comfort.
Similarly the stretch needed to play the intro riff to "Born to be wild" - adding in that last little bit with the pinky is an ow-ee and not something I can do reliably or cleanly without ending up with sore bits (either base of fingers, or wrists from holding my hands at a weird angle and tensing up).
I'm assuming I can improve this with exercises - regularly playing particular scales or something? When I was a kid an played piano I had quite a good span on both hands but I've lost the art of spreading my fingers rather than grouping them, it seems.
What sort of things are worth looking at to free things up a bit?