Lots of personal things I think.
Running a bath for them and hopping in with them.
Back massages (oil makes them even better)
Feeding each other food in bed (chocolate strawberries are great)
Writing them a love letter/story/song/poem /whatever
Doing a strip tease for them
And then any type of toys you two like. Could be some bondage, teasing her with a vibrator, playing with her ass, whatever.