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Reusable sandwich baggies. These are for sale, but wouldn't be hard to make at all! Another something I need to do lol
Very detailed tutorial on a reusable snack bag. It's machine washable and can stand upright. This is a great idea for packing snacks, and it has velcro at the opening.
Reusable Lunch Bags (sewing tutorial) | I Heart Nap Time - How to Crafts, Tutorials, DIY, Homemaker
Easy Reusable Grocery Bag tutorial. Could be made from old pillow cases/sheets/etc…give sets away as gifts.