My wife collects FoodSavers. Not really, she only has three of them and she uses them all the time. She vacuums seals all kinds of foods and spices in mason jars.
This is the second video she has made on them. It shows a smaller less expensive version of the FoodSaver that is designed to seal jars and some plastic bags called a Mealsaver. My wife likes it for sealing jars, because it takes less room on her counter. The following is a video she made showing how to use it and a trick she learned for sealing fine powders like spices.