I bought one at a garage sale last year. It's the FoodSaver brand. I finally pulled it out to vacuum seal and freeze a ton of blueberries last night. 2 Questions: -Any ideas for other summertime bounty fruits/veggies that will seal and freeze well? I want to be able to enjoy this yummy stuff when winter comes. -Do I have to buy the roll of bags online or do they sell them in stores?