Sometimes I jerk next to my wife. in the dim light of the night lamp I get fully nude next to my wife when she sleeps. and I start rubbing my balls and hard dick. I do it with a bit more movement so that she knows wat I am doing. I remove all my blankets. i feel the time she watches this but don't say anything and pretend to be sleeping. imagining jerking off my dick secretly while being exposed by my wife turns me on.
Sometimes I just get nude and place my sleeping wife's hand on my dick while it grows in her hand. that's all. nothing more. I stay hard for hours. it's painful to be horny with that soft touch still no progress. She knows this but then continues to sleep while holding my firm cock. In an hour or 2, I also fall asleep without cuming.
these are things which I do but we never discussed later which makes it more kinki and interesting for next time.