There are some wasteful products I buy that I have not been able to give up for several reasons:
Cheese -- packaged in plastic -- other options are limited and very expensive
Disposable baby wipes -- it's hard to get poop off cloth ones (after kid starts eating solids)
Butter -- packaged in waxed paper -- where to get other options?
Greek yogurt -- large plastic tubs -- didn't love making my own, convenience