I have about 250 crickets in a giant clear Rubbermaid bin and this has worked out really well for me long-term. I initially used egg flats but have since found that long paper towel rolls work even better for hiding and crawling. It makes keeping the bin cleaner much easier because you can just tilt a tube vertically and all the grass falls out (and then you just shake the tubes until the desired amount of crickets fall out. I know with a lot of roaches an opaque bin is ideal, but with crickets as long as you provide dark places they can crawl into (like paper towel rolls) they’ll thrive.