Reddit mentions of TO GO WARE Sidekick Container Large 1C, 1 EA

Some upfront costs, but on the waste front: in addition to the obvious cloth diapers/cloth wipes, we also go through very few paper towels in our house (mostly for cat puke or similar). Old clothes, diapers, and the million and a half receiving blankets/burp cloths get cut up and stashed under the sink. We have a huge pile, but we go through them regularly with a toddler and a 1st-grader in the house. We use them for wiping faces, hands, tables, floors, everything. We have converted almost entirely to cloth snack bags. There are lots of brands, but those are my fave for pliability, capacity, and the fact that they zip closed. They're good for just about anything that's not liquid, including fruit. We also got some reusable pouches that were great for baby breakfast (mostly oatmeal and fruit and yogurt blends) but also awesome for sending yogurt/applesauce in the big kid's lunch. We also have tins that will hold food for snacks in the diaper bag or lunches -- we have a couple sizes of these. It helps cut down on the disposable food containers, while also encouraging making/packing your own.

And yeah, for less stuff, just have less stuff. Totally easier said than done, but that's more or less all there is to it. Say no and regularly cull.