Stasher 100% Silicone Reusable Bag, Sandwich Size This Stasher 100% Silicone Reusable Bag ($12) is one of the most useful options. It works great for sandwiches, leftovers, and larger snacks. Image Source: amazon.com Stasher 100% Silicone Reusable Bag $12 from amazon.com Buy Now