Something I eat almost everyday is a peanutbutter and jelly sandwich. simple but classic. Regular peanutbutter is too sweet for me though so I use natural peanut butter, chunky when I can get it.
Also often I make a black bean and hummus sandwiches. I Toast some bread, spread home made hummus on both sides of the bread, put a layer of black beans down over the hummus, finish it off by putting some cucumber and tomato slices inbetween. Especially good on hot days