When shopping for canning jars, be aware than some canning jars (usually straight-sided) may also be used in the freezer. Canning jars are also good for storing dry items such as beans or even coffee and can be used with some vacuum attachments for sealing out air without canning.
This is an excellent way to store beans, coffee, grains and other items that need to avoid exposure to humidity in the environment. Your own quick mixes and pancake mixes.
We also use the smaller 1/2 pint straight sided freezer-type jelly jars for preparing individual puddings to take along on picnics and for baking small cakes to pack in a lunch.
One of the most valuable skills you can acquire for kitchen economy is how to bake. If you’ve had your share of fallen cakes and tough cookies, remember that in the past there were no alternative ready-mades easily available (Grandma didn’t often run out to buy a bag of cookies or box of brownies). This meant that Grandma would try and try again until she had reached her goal of edible perfection. And thus, the skill of baking was learned. The same holds true in baking as it does in the acquisition of all other culinary skills: Practice makes perfect.
Have patience with your failures and don’t be set back by them. Soon, and with practice, your baked creations will be a great improvement, and so much fresher and more nutritious than their store-bought counterparts.