Go to walmart/target/kmart and get yourself a 58qt sterilite tub, and some coarse sandpaper.
When you get home use the sandpaper to make the bottom half of the sides of the tub rough, this will give you more surface area for the crickets and they still will not be able to jump out.
I use chicken mash for my primary gutload... common moisture sources are oranges, carrots, potatoes, etc...
If my instructions were confusing the picture should clear it up.
Hope this helped.

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-Ross Payan - www.LeosAnonymous.com
Leos Anonymous
Ball Pythons, Red Striped Leos, W.Hognose and Screaming AFT's