Did you just see a lonely, unhatched egg in your garden and developed the feeling of growing it like a baby? Well, that is very much possible. Most of these eggs are the ones that have been abandoned by the mother bird after they had fallen from the nest. These eggs can be hatched in an artificial way, and even without incubator, there are many easy home-made ways of hatching the eggs.
Drill a hole on the bottom portion of the box, and run the electrical wire throught this hole and screw in the light bulb (preferably 2 to 3 watts).
Drill a hole through the top portion of the box, of diameter marginally smaller than the diameter of the egg to be incubated.
Place the egg over the hole for over a week's time and observe the egg for the appearance of a cloudy mass, which is a positive sign of the development of an embryo.
Put water in the spray bottle and spray over the egg. The egg should be humidified from time to time by a water spray in the period of one week of incubation to avoid the chick sticking to the walls of the shell or formation of an air bubble. These may impair the process of hatching and at times even result in the death of the chick.
Optimum hatching temperature for chicken eggs is 37.2 degrees C, but application of a heat source bearing comparatively higher temperature can result in the death of the embryo.