More recently I have also really enjoyed sketching, colouring and editing on my iPad. It is so handy for when I am travelling and for capturing an idea on the go.
But nothing really comes close to getting 'in the flow' with ink and paints when I can. And, sometimes the little mistakes and smudges you make when you are working freehand, without being able to just hit an erase button, turn out to be what people enjoy the most.
"Time you enjoy wasting, was not wasted" - John Lennon