Many different alternatives to disposable resealable storage bags exist. There are options that can be customized to fit your style plus add a significant cost savings.
Reusable resealable storage bags. At an average cost of $12 for a 4 pack, the cost savings is over $800 a year! Check out these reviews for the top 8 reusable bag brands in 2020. https://www.realsimple.com/food-recipes/tools-products/reusable-sandwich-bags
Storage containers (hard plastic, wood, metal, ceramic, glass). If you do not want your sandwich to get smashed, consider a storage container. There are also several great bento lunch box options for lunches with multiple items.
Mason jars, sizes range from 4 oz. to 1 gallon. These jars are inexpensive, sturdy, come in several sizes and have many useful purposes in addition to storing food. They also make nice vases. organizing knick knacks, and canning of course! Storage containers and jars are more leak proof and better at protecting food from get smashed when finding room for leftovers in the fridge than a plastic resealable bag.
Beeswax wraps– Are easy to wash and come in many different sizes. You can easily make these at home with your favorite fabric pattern to customize them to your tastes and needs. They make great homemade, and useful gifts, visit the link below to learn how to make these in a snap! https://www.goodhousekeeping.com/home/craft-ideas/g25642328/diy-beeswax-reusuable-wraps/