To make your own version you'll need: a threaded rod (7/16 in 1 foot length was perfect for this project), 6 washers + nuts, 3 smaller nuts and bolts to use as feet. Assuming you already have a drill and dremel, the total damage is only a few bucks and everything can be picked at any hardware store. As you can see I spraypainted the inside of the cans because they were really rusty. If your tins don't have this problem you can skip over this step entirely.
Mark the center of the bottom of each can and drill a hole large enough to accomadate your threaded rod. Drill 3 more holes for your nuts+bolts 'feet' in your bottom tin only. Use a dremel to sand away any stray metal pieces around your holes. Screw in your smaller nuts+bolts to serve as feet on the bottom tin. Layer your tins at the desired heights by sandwiching the nuts and washers at the bottom and base of each tin. Voila, you are done!
And yes, that is my handsome husband wearing my sunglasses as eye protection. Isn't he fabulous?