You would not get them hatching fast enough to have enough to scoop out every few days, or it would cost a lot. I used to breed them in a 1kg peanut butter container similar to how oneyedfrog explained. I also hatched some in a large plastic container that sat on the floor of the lounge in the sun. The eggs had been gathered from the edges at Lake Grassmere (the salt works). They hatched, lived, reproduced etc but not in great numbers.
Brine shrimp anyone?
My little hatchery...