I had three of these citronella candles that had burned down and reached that point where they would no longer stay lit. But I've always liked the look of the metal container.
I decided to try and see if they could be used as plant pots. I placed them upside down in the direct sun and let it do the work of getting rid of the remaining wax (didn't take long in our 100+ degree temperatures). Then I removed the plastic cover from the bottom and drilled some drainage holes.
I knew I'd have to watch it to make sure the sun hitting the metal doesn't cook the plant, but I figure a heat & drought tolerant plant would likely be able to take it. I decided on a recently purchased Dyckia choristaminea 'Frazzle Dazzle' (who could resist that name!). Though its only been a couple weeks, it seems pretty happy.
Will have to be on the lookout for plants to place in the remaining two "pots".