There are several different traps you could make to catch crickets, but the two that seem to work the best are the soda bottle method and the duct tape method. In the soda bottle method, you are luring them into the trap by putting a fine layer of sugar at the bottom of the bottle. Once they pass through the inverted top, they can't find their way back out. The duct tape method is great if you know the area where the crickets like to be so that you lay out a strip of tape with the sticky side up in that area. You leave it overnight because crickets are nocturnal, and when you check it in the morning you should find several crickets stuck to the tape when they tried to walk across it.