Check out these Flower Grenades from SuckUK. Each grenade is filled with wildflower seeds, and the idea is to inspire guerilla gardening. All you have to do is toss one of these biodegradable grenades into a field or near a sidewalk, and within a year a burst of wildflowers should explode from the patch. Pretty awesome! Check out SuckUK's online shop for more smartly-designed products.