lmao I buy anything from, kale that's gone on sale because of that time of year, and it's .99 for a bunch and then I just spread it out among my insects. But I also rely heavily on root vegetables, winter squashes, sometimes some summer squashes that I bought for myself but didn't get to before they started to get... that pithy feel? I do sweet potatos, and carrots a lot just to round out a single night when I also add a handful of various leafy greens. If you get carrots with tops, cut the tops off those last a week at least in a plastic bags with a moist paper towel around them. I always give leaves and tops of carrots or celery or strawberries, anything edible but that I won't eat. Anything from beet tops if you eat beets etc etc. I buy a thing of spring mix once or twice a month (usually on sale depending on the kind I get), and keep it in a container that extends the freshness. Anything I have extra of, like ends of squash and cucumbers. I do entire watermelon or melon rinds in general, and only leave it in over night, but only put like.... 1/4 of the small/personal melons. I mean everything I buy on sale for them I don't spend more than 3 dollars, and if you have a grocery store that has that produce stand thing that puts the really old or bruised up produce on sale, check it out. I have hit some scores there. Honestly I give it to them all the time. As long as there's no mold you can cut out the bruises etc. The roaches don't care XD. I do it with the my home grown stuff as well. Once every other month I splurge and hit maybe 15-20 dollars when I buying stuff that will last longer like specific root veggies and sweet potatos or yams.