Life Hack-Peanut butter and Mason Jars

It was one of those mornings, the ones where you are half asleep at breakfast.
I placed a good spoonful of peanut butter on my pancake and went to replace the lid, only I put it on the peaches instead and thought nothing of it until I wanted some peaches.  Why, in my half asleep state, did placing the lid on a mason jar not phase me...because it fits!

I became excited and awake after that.  I thought of several things I could put in the jar that needed a lid, but not necessarily a tight seal. (Or a two piece lid)

Yay for life hacks!

Guess I should figure out how to flip the pic, just turn your head, it does about the same thing...