IDK, I definitely don't consider novelty a requirement. Someone who makes a chair or a machine like https://www.youtube.com/watch?v=EgTnfTqycV0 is clearly a maker even if they're just making what many others have already made before; arguably the embodiment of the maker spirit is making something yourself even if someone else's solution is both available and more useful.
(the systems integrator may be doing something useful —certainly something lucrative!— while hardly novel; the shade-tree github'er probably has a directory full of explorations that are novel but not —at least not yet?— useful...)