I have plenty of ventilation - I grabbed one of my old cat litter containers - ya know those big plastic tubs? I drilled about a dozen holes in the side and top and put a strip of tape underneath the lowest holes, so they can't escape.
The gutload, right now, is a rather stinky concoction of broccoli, romaine lettuce, spinach and squash. It is, by far, the smelliest gutload I have ever made in my life (and for some reason, this is a source of pride for me...). I also have some of the regular cricket food chilling in a small container.
I used the lid of a plastic container as a water dish, and put just enough water in it so they won't drown. And yes, I was buying a few crickets at a time. It got to the point where I was getting fed up with not knowing if the crickets were gunna live from the car ride to and from the pet store, so I figured I'd go out, buy 5 dozen, cross my fingers and wish for the best.
SDheli - i really like your set up. I may copy that, as I have some spare drawers like that sitting around. What did you do for ventilation? Also, the sprig of rosemary is a fabulous idea!!! I wonder..do you think basil is suitable for a gutloading herb? I grow so much basil and it would really cut down on the stink.