Check your receipt. Grow your own veggies. Ask about senior discounts. NPR readers share their top tips on cutting costs at the grocery store.

The goal is to save money, cut back on overconsumption and be more mindful of wasteful and unsustainable shopping habits. This guide can help you start a challenge of your own.

The first step in cutting back on plastic is understanding what you're using and how much of it. Do an audit of the plastics in your home to get a sense of how much plastic you use.