If you love DIY as much as I do, then I really really do suggest for you to try this one out. (And then may be you can let me know how you went?)
It’s such an awesome idea I’m going to HAVE to convince my bf to let me put one of these on our balcony! Or not. Last time he watered our parsley with alcohol without my consent. Because he thought it’s good for them. Guess what happened to the parsley?
For more inspiring photos and instructions, see here!