Hmm when i was younger my mom would wake me up while my brothers were sleeping in the middle of the night and she would have something cooked and set up in the living room. We would spend the whole night just talking and watching tv (mostly talking). Now I do it for her! I will either fix her favorite meal, or pick her up something and just "veg out" with her.
Also, I just try to pick up little things I know she is interested in, she adores crafts so I will get her some new little nick-nacks that look useful. I even get little key chains and things like that, that remind me of her.... I mean she is my BEST friend!!!! lol