18. Sell Seeds Over the Internet
If you grow any unique or different types of flowers, fruits, or vegetables, consider selling the seeds. Many people feel bound by what commercial 'home garden' seed companies provide, but there is so much more available. This has seen an increase in recent times with the worry about crops grown using genetically modified or GM seeds. Heirloom seeds, or those which are passed down or 'natural seeds' have seen a sharp increase in sales.
Whether it is an enormous pumpkin variety or a dainty flower, keen gardeners are always on the look-out for something new. Remember to get a photo of it when it's looking its best, as it will sell much easier. You could advertise your seeds on eBay or its equivalent in your country.