I ask her everything from where do you want to eat, what do you want for dinner, what do you want to do this weekend...always "whatever you want".
try a different approach, like others said, take the lead on these things. she will get with the program and soon be offering suggestions too. you just have to get her started, i'll guarantee after you start coming up with a few things she will then too.
"say honey, why don't we prepare a picnic dinner and going to the park this saturday evening? we can enjoy our dinner, then pack up our picnic, let's take some chairs and a blanket and watch the sun go down and watch the stars until it gets to chilly?"
this gets the two (three) of you together actively for many hours. bake some cookies, fry up some chicken, make a salad, chill some fruit, pack it up and there you go. you spent several hours together getting your dinner ready, off to a nice park to enjoy your efforts and relax.
best of luck to you and let us know that you are finding interesting activities for your family!!!