My last few shows I've been using an iPad and Notability App during rehearsals. I talk all my line notes, blocking, etc in Notability because it is easy to move a notation, drawing, text etc. At the end of blocking, I take some time to then go back in and clean up my notes in Notability. I color code all my cues, type them out, move them to the left or right side (depending on how I like to use it), and then go from there. Before the show opens, I always print out my notes just in case, but I do use the iPad during the run because of my eyesight it is easier to see than a printed page (color blindness and being old!). I can also share my notes very easily with my ASM or other people as needed.
Bil