My first son left on a mission a few months ago.
We've since noticed that bread lasts a LOT longer - to the point it gets moldy. Apparently he would just randomly eat slices of bread so we'd go through loaves pretty quickly.
We've also noticed that random stickers off of fruit no longer appear in random places under our counter tops. (He swears that wasn't him - so maybe one of his other siblings picked the perfect time to stop doing that)