On a nice, dry day you can make meringue cookies by whipping the egg whites and dropping them by big spoonfuls, or piping them, onto parchment paper and baking in a very slow oven for....er.....I cannot remember, hopefully someone will chime in.
You can flavor the egg white with stevia, vanilla, a dusting of cocoa powder, anything delicate. You MUST make them on a DRY day or they get sticky!
They are so delicate and light, you can eat the entire batch guilt-free! For breakfast!