Harvard’s Website says, “Supplemental submissions are useful only for applicants with substantial talents beyond standard high-school level accomplishment. Consider carefully whether your supplemental materials demonstrate unusual talent before submission. Specific guidelines for each type of submission (art; dance and choreography; or musical performance and composition) are available within each program.” So would putting maker portfolios we used in MIT count? Or would they not want that?
I sent in a maker-portfolio type supplement with pictures of physical objects I had made and descriptions of how I made them, and I was accepted EA. Obviously, there may be a big connection between those two statements or none at all, but it definitely can be done. I would say the things I made were impressive but not unbelievably so.
As I often say, the plural anecdote is not data. 
For the OP, I would also draw the distinction between your question:
and the response above:
So yes, a supplement of that type is feasible, but since you are applying RD, I would tweak it so that it does not scream “My EA MIT Maker Portfolio” in the same way that one should not reuse the unique UChicago supplement without serious edits, since every AO will know for whom it was originally designed.