I bought a Food Saver wide-mouth mason jar attachment (10.99) today at Bed, Bath, and Beyond, luckily I had a 20% off coupon. Then I went to the Bosch Kitchen Center and found both the wide mouth (.99) and regular (7.99) mouth jar attachment .
Now I can use my 1/2 gallon mason jars for storing barley, brown rice, home dried fruit, home dehydrated veggies, homemade croutons & crackers, fresh dried herbs, etc. The vacuum seal will extend their shelf life. I can vacuum seal jar cakes, nuts, spices, etc. and keep in the freezer. I may also use freezer jars for home grown, blanched, and frozen veggies.