Never would I have thought of this, even in my wildest dreams!
What he does is so brilliant and quite stunning.
My personal favorite is the first backsplash he does.

He glued the bottle caps on the wood with silicone and let those dry.
Then he went over the whole thing with colored grout.
These are quick and inexpensive projects.
Watch how this guy on Cityline does these backsplashes in this step by step tutorial.