Super hungry - want a huge lunch low on calories... suggestions?

I feel a cheat  day coming on.

I ate really light the last  two days (not feeling well) and today I have my appetite back.  What I *want* to do is go buy a soup/sandwich and some kind of snack for after.... but I am assuming that would hit 800 calories.  Not good.

Any ideas for something that I can eat... and eat... and eat... (thats not salad) that is still relatively ok for me?

TIA!

If you are craving McDonald's, just get a regular hamburger and then a fruit/yogurt parfait w/granola.  It's a great lunch and not bad on calories.