Grow Your Own
With nothing more than some fertile backyard soil and a handful of seeds, you and your friends can grow vegetables, flowers and fruit to sell around the neighborhood.
All across America, the local food movement is booming. What's more local than food grown two houses down the street? You can add value to your produce by growing it organically — no chemical fertilizer, pesticides or herbicides — and focusing on eye-catching heirloom varieties that neighbors won't find in the store.
As with the lemonade stand crackdown, you could run into trouble if you set up an unlicensed produce stand in your front yard [source: McSweeney]. But there are many other ways to market fresh food and flowers. You can ask your neighbors if they want to sign up for a weekly garden harvest. For a fixed price, you can deliver them a basket of seasonal vegetables and fruit, or some fresh-cut flowers all summer long.
If you don't want to commit to a full growing season, concentrate on holiday sales. For example, grow potted flowers in a sunny window and sell them door-to-door as Mother's Day gifts. Or if you have a big backyard, raise pumpkins for Halloween.