Grow flowers and veg in ur garden and sell them. This takes a little time but is a sure shot. Like onions. They take 2 years to produce seed and although you can grow onions from a previous onion growing from a seed is easy so the seeds sell. Then there is adenium. It sells for a good price, require a bit time to get the seeds and is a very low maintenance plant. These are just 2 examples. Start growing as a side job. It will provide a steady income once you get started. And since it does not require much time you can devote it to earning money form other sources too. You can write a squidoo lens. Its basically an instructable page with all the links like a link to a related youtube video and links to other websites. You make money with the ads here. On the traditional route you can walk the dog, mow the lawn, water the garden, do a newspaper round, shovel the snow, sell home-made cookies and lemonade.