Good news if you've got a green thumb and limited space—Ikea now sells mini-greenhouses. And they're only $20 a pop.
You might need a couple of them to fit your garden, because at about 18-inches by 9-inches by 14-inches, they're little (and adorable). But it's the perfect size for your desk or your small pad. Although you'll still need to keep them near a window for sufficient light.
They're not available online, so you'll have to check if your local store is selling them. Really between this and the lingonberries, why would you ever need to go anywhere but Ikea? [PSFK]