Free time and eating disorders

I have a really hard time with free time. I don't know how to occupy myself and be satisfied with life and I recently discovered I am not alone. Another girl in the house who also has disordered eating and exercise told me today, she didn't know what to do- her work was done and she was basically sitting around, waiting to go home.
"What will you do at home?" I don't know, just sit around. But it's expected there

You see, the problem is, we have problems "sitting around" in our cubicles of a room. We have no real sense of belonging (other than the gym, after which comes the "now what" response). I suggested a trip downtown. what she really needs (and myself) is a hobby. Hobbies are hard to cultivate when you are focused on one solitary aspect of your life.

Recently, I have tried to get back into photography and I have started yoga. I am going to start playing the piano again, I think, and I think I may also restart collaging/scrapbooking. I like baking but I realized that is a dangerous hobby- too much food related and too much analyzing goes into what I am going to bake. I'm just too weird about food.

On that note, I ate dessert with lunch today and a pretty substantial breakfast. I don't feel too bad about the dessert (maybe just a slight tinge of guilt). I have been eating a lot more sweets lately though half of the time I don't actually crave them.. so I'm not sure if it's a good thing to be forcing myself to eat these sweets. On the other hand, it gets my mind off of food for a while (maybe it's that psychological connection between sweets/desserts and satisfaction). I think this stems from my mother, who always needs desserts. For now I won't worry too much about this but I will keep it in mind for the future. I really need to not be weird about food.