Get an air popper for popcorn (so you can pop it with NO oil), and either eat it plain (I like it), or use one of the billion recipes online that uses fantastic seasonings instead of butter. There are all kinds of interesting no or low fat ones that taste fantastic - and popcorn fills you up more than a lot of other things.
1/2 cup Fat free cottage cheese - good source of protein.
Corn on the cob. I loooove it plain and fresh cooked, or you could use one of those fat free fake butter spray things.
Nonfat yogurt - I really like Dannon's Light and Fit Creamy style - I think it's 90 calories and 8 grams protein.
Another thing, especially if you are focusing on a low fat diet - since your body does need fats, restriction is only good in the sense that you now get to choose your fats so to speak - if you are cutting out most of the bad or unneeded fats, if you are going low enough, you'll want to replace them with good fats. I often measure out 15-20 raw almonds, or something similar, to munch on during the day. I'm always surprised at how satisfying they are, and measuring them out before hand keeps me from just going through the bag! Nuts = fats, but so much better for you than french fry fat!!!