What a great idea!!!
Put your old 2-liter bottles to good use by keeping them out of the landfill and making cheap upside-down tomato planters. Even if you lack any gardening space at all, you can have fresh tomatoes throughout the growing season with these planters. They can hang from your porch, patio or a sunny window. Making soda bottle tomato planters is also a fun way to introduce children to gardening, while teaching them to be environmentally friendly.
Remove the cap. Cut off the bottom of the soda bottles with a utility knife or scissors and discard them.