I made sand art Brownies in a jar many years ago as gifts, but the thought didn't occur to me then that you can store other things like that as actual 'food storage'. The majority of your ingredients are all in that jar, so it makes life really easy if you are living off your food storage, or makes life fun if you are cooking with the kids and all you have to do is simply tip the jar upside down and give it a good whack (or two...depending on how tightly packed the ingredients are).
I stumbled across this site, which has loads of helpful and varied recipes from soup mixes to sweet baking (like biscuits and brownie recipes):-
They make a great gift as well:-
Don't forget to include the instructions on your jars. They're kind of helpful! ;D