baby crickets

has anyone here ever bred crickets to feed killies and other small fish

Haven't done it personally, but you can. Fruit flies are probably easier, though, especially since their adult stage is small enough to be fish food. 

they don't fly, little ones for aquarium, big ones for lake

Years ago when I had some baby lizards, a gas station near me sold crickets.  They let me put a box of moist sand in their cricket bin, so each week when I'd fill up on gas I would swap out the box with cricket eggs for a new one, and hatch the eggs at home.  No noise or stink of a cricket culture in the house.

Great idea, Gerald! The only time I ever raised crickets it was accidental. I had a Plated Lizard that had died; moved its aquarium outside to a seldom used area in the Back 40, and forgot about it. When I finally remembered it and went to take care of it, I found the sand nice and damp and loaded with various sized crickets.

gerald, talked to my local bait dealer, they said sure, we'll see how it woks out, thanks

Sand/soil for egg-laying should be moist, but not too wet, about 2 inch deep.

had trouble with drying out  in my egg container, switched from sand to commercial potting soil. disaster, all the crickets at the donor baitshop died. ingredient list did not list insecticide, but I am suspicious , and the owner is of course not willing to allow me to continue. need to make apologies, then decide if I want to raise my own crickets.