I practice the drills that Phil gave me in his class
I also have both of Steven Andersen's dry fire books as well.
Recently I setup a target stand with 3 targets stapled to it and ports cut in them at various heights so I can practice moving into and out of the ports/position.
I always practice my Weak hand shotgun loads from my shoulder and from my hip both stationary and on the move.
I practice the draw and reloads a bunch since those are easy to do.
Funny the actual dry firing of the trigger isn't as important as all the mechanical stuff is once your trigger control is down.
I will throw in a few AR mag changes and practice getting into the prone position when a 3 gun match is on the horizon.