Recently, I preserved fresh peaches from my garden and used wide mouth Mason jars with a medium sweet syrup, leaving enough room for expansion. Shelf life of vacuum packaged foods is 3 to 5 times longer whether you refrigerate or freeze. Money saved on spoiled food or buying in bulk will pay for the unit. Besides vacuum food, you can also make packaged disaster kits when emergencies strike like power outages or when you have items such as flashlights, batteries, bandages,watches,tools,etc. packaged to solve the immediate problems for home, car or boat. Keep clothing , towels, or medications dry and also, protect against moisture even if the package lands in the water.
Medications are child proof when vacuumed packed.
It's been said that some people have even vacuumed packed their jewelry and hid it from burglars by keeping it in the freezer. That's a new twist on valuables. Saves on vault expense. I think you better leave a note in your will where all your valuables have been stashed . The origin of ice cream can be traced to antiquity and biblical times of King Solomon.