If it doesn't work, the metal recyclers will haul it away for free in a heartbeat.

If it is way out of the norm like a....recycled beer can wall bonded with a recycled plastic polymer (just the craziest thing I could think of right now) then you stand to have quite an expensive hurdle getting it tested and designed to pass scrutiny. 

Each house will have debt, that your tenant is paying off for you (house MUST have positive Cash Flow) = Good Debt.Just keep recycling the same cash over and over with each new cash buy and refinance.  

There are a lot of real estate professionals that sell homes using seller financing and regualrly sell of notes to recycle the money to buy more homes to create and sell more notes!

Nationstar in particular (using auction.com) is letting homes recycle 3-4 months instead of taking reasonable offers.

We're at the start of the RE cycle and I believe your chances of significant appreciation are very high.

Recycle don't throw serviceable items in the landfills.

Another way to make it nice at an affordable price is to use display cabinets if you can or recycled.

@Matt DevincenzoI like your idea of moving to a nearby area that has yet to be positively affected by an upturn in the RE cycle.

I am going to switch them back to individual cans (+1 shared recycling) and have started negotiating with companies.