Cricket+Supersitions

Crickets are considered lucky or ominous in some countries. Here are some superstitions on crickets (source: Kentucky Superstitions, Daniel Linsey Thomas) -

Killing a cricket will bring bad luck. If you Kill a cricket, other crickets will eat your clothes. A cricket brings luck to the house.

Wikipedia states (needs to be verified) - In Brazil some believe that a cricket chirping will bring a financial windfall or rain. Some brazillians believe that a black cricket in a room is set to predict illness, a grey one predicts money, and a green one predicts hope. In northern brazil a cricket announces death, and it is killed if it chirps in a house.

Chinese feel the cricket is lucky and will carry one around. It may have started as someone would carry one on their travels and if it stopped chipring that meant someone or thing was approaching your camp.