After last year's CES, I noted that makers of 3D printers and 3D printing service provders had a small but noteable presence. This year their booths seemed larger and at least when I came by, the crowds around the booth seemed larger and more engaged than last year.
If you haven't looked and your invention involves "things," you might want to have a look at the growing market for 3D printers and related services. Here is a short list of those I looked at @ CES. Look here for a basic view of 3D printing (stereolithography).