A cricket dish is nothing fancy...most of us use an appropriate sized glass bowl (something the frog can fit in to get crickets but not overly huge) and sink it into the substrate. If you dump in the crickets at night, any crickets left over from the feeding usually end up in the glass bowl and are either easy pickings for your frogs or easy for you to remove and regutload for the next feeding. I picked up various sized glass bowls at the dollar store and use them both for water dishes and for cricket bowls.