One of the most original DIY kits we've found is the mushroom Mini-Farm from Far West Fungi. The next best thing to mushroom hunting, and far less dangerous, they come in shiitake (the easiest to grow) and tree oyster. The kits ($19.50 each) are cultivated from the fungi at the store's Moss Landing farm, but don't smell much different from the mushrooms they grow. You can purchase them at Far West Fungi's retail outpost at the Ferry Building or order kits online, but the fungi experts advise minifarmers to make sure they're ready for mushrooms, because with or without you, the kits will start growing a week or two after purchase. If you're attentive and follow the instructions, the kits can yield up to a pound and a half of shiitake and up to 2 pounds of tree oyster mushrooms.