Who doesn’t love fresh herbs? If you have the patience and a meager minute every few days to spare, one thing you can invest in are indoor mini-gardens. As the name suggests, these are accessible, portable gardens you would set up inside your home. With minimal effort and skill, one can have year-round fresh herbs such as: basil, parsley, mint, oregano, or rosemary. More herbs and some tips in an external link below.
There are many do-it-yourself kits available at home goods stores. A neat kit I discovered is sold by some folks at Windowfarms. Their setup includes canisters that can be hanged or stacked at or by your window. The stacked, vertical design lets you fit more in small spaces and makes for some amusement for your guests.
If you are looking for more gardening advice, here are a few resources: