While we're renting I have to make do with a 'garden in pots' - all my pots are from the Tip Shop and at $5 a pop they're pretty good value. I buy my seeds on eBay, you can find so many cool variants by using 'heritage' or heirloom' in your search.
I have some Thai Pink Egg Tomatoes sprouting alongside some Royal Black Chillies. There's not much 'gardening' per se. I just water them and pick herbs and veggies from the pot but it's nice to have a few fresh things to add to dinner - Sybil likes to supervise.