My dad shared to us this business hes been planning to put up, its called vermicullture. Its amazing because you use earthworms to do the job. How? Its quite easy. But first do you guys know what vermiculture is? According to my dad you grow earthworms and use their poop as fertilizers. You can even sell them if you like.

Its said that in 1 square meter you can put 1 kilo of earthworms.

Steps:

1. Of course first you should have a bin or container which is 1 square meter most preferably wood and some soil. Don't forget to put some holes on the bin for excess fluids to drain.

2. Place the worms (african nightcrawlers- earthworm species).

3. Add the biodegradable garbage such as leaves.

4. Just wait for the earthworms to decompose them and wait for their poop.

5. Presto!collect their poop and make them into fertilizers for your plants or sell them.

Think of it. You're saving mother nature and earning money the same time. For more info you can try to visit wikipedia.com