Containers are a great way to have a garden without a yard.
Plants can be grown in anything from an empty soup can to a whisky soaked wooden barrel.
Succulent plants are great choices for containers. They are more willing to tolerate a pot you've forgotten to water the last few months. Hey, you're busy, I know.
Succulents and cacti do best in bright sunlight. If your window gets full sun all day these would be a good choice. Bright, indirect sunlight will also work too.
Here's another idea for a plant container; your favorite coffee mug - after it cracks! I just loved this little daisy mug (I keep meaning to do something like it for the store....). But it cracked in a way that couldn't be fixed.
It's about 16 oz, so, I popped in a plant growing in a 3 inch plastic pot. It's a crassula (succulent plant) so it doesn't need a lot of water anyway. When it's time I can just grab the handle and whisk him off to the sink. The mug still leaks, so I have to make sure the mug is finished dripping before I put it back. I'm pretty clumbsy so I am gathering quite a collection!