It's good to feed crickets fresh veggies as well as the dry cricket chow.
I use the water pillows or the gels, placed in a very shallow rock dish. The dry food is in one little bowl, and I use a wider shallow dish for greens and fruits. I usually give them the stalks and some leaves of what ever green I'm feeding my iguanas that day (collard, mustard, etc).
About once a week, I add some bearded dragon dust (vitamin supplement) to their chow.
Here's a good guide:
Breeding and Raising the House Cricket
I house my large ones in a deep rubbermaid tub with playsand in the bottom. Keeps them from stinking because it dries out any little cricket corpses. Then I just spot clean as needed.
I use the egg crate flats (that come with the crickets in the mail - I usually order 500 at a time) so they have plenty of places to hide. If they have nothing to climb on, they'll kill each other faster.
Good luck with your crickies!
