I love my little window box garden. There's nothing as soothing as waking up (even if it's not too bright and early!) and looking out the window at the myriad colours vying for your attention. Occasionally, we're hosts to tiny little birds that we don't even recognise; butterflies too. Pottering about on weekends, happily convincing myself I have a green thumb or two, can spend a nice bit o'time digging away... followed, of course, by a nice hot mug of coffee.
Dunno about anything else, really, but there's one thing I've learnt: plants make you happy!