This is great since we don't have any outdoor hose hookups! How to Build a Rain Barrel. A dual barrel system that uses atmospheric pressure to equalize the water volume in both rain barrels. Use the water from your rain barrels to water your plants.
Mailbox as Garden tool holder ~ COOL idea! Looking for an old mailbox, now!
Cheating a shelving type thing like this but to cover the air conditioning unit I think would be a great use of space an look great