Believe it or not, even with a teenager and a tween-ager, bread is one thing that I really have to keep an eye on to be sure it doesn't go stale (or, in our climate, moldy) before it gets used up. Earlier this summer, I stumbled on a great way to be sure that leftover bread doesn't go to waste. I was making French toast for breakfast one Saturday, and decided to just keep making it until the egg mixture ran out (not wanting to waste that, either). I then decided to lay out the leftover pieces on a cookie sheet and freeze them. Once they were frozen, I put them into a ziploc-type bag. This worked so great, that I now make French toast whenever I notice there's a partial loaf of bread in the pantry that we haven't touched for several days.
Just pop the frozen French toast into your toaster like you would frozen waffles--it works great, and your whole house smells like french toast. My oldest particularly likes to pop a couple in the toaster before he heads off to his lifeguarding job.
I'm sure many of you have been doing this for some time, but I was quite excited when I figured it out.