Here's a clever use for a 12 pack of coke after you've finished drinking it. Make a vertical garden:
I'm quite certain that if I attempted this, the results would end up on a BuzzFeed list like this one (thanks Maryn for sending me this link, I got quite the laugh from it!). Still, the whole notion of a garden built on a hack definitely appeals to me.
Speaking of BuzzFeed and interesting outdoor hacks, my brother passed me this link: 51 Budget Backyard DIYs That Are Borderline Genius, and I have to admit, I was quite impressed by many of the option.
Now, convincing Shira to let me try any of these out...that's a totally different story.