If you get anywhere near Moab, UT, you shoulda/oughta come on over the 40-50 miles or so to the Western Slope of the Rockies in Colorado...take a look at what we have to offer:
There is a harp maker here willing to give tours anytime except Saturdays. Also a decent Museum of Western Colorado.
There are loads of other places to go to but anything this far north may entail mountain passes full of snow, so the southern route might be preferable.:-) Give me a holler if you think you'll be coming through this way!
If you go the southern way, Four Corners is interesting and close by some of the other places mentioned, well, close-by in the West.:-) Also Mesa Verde is down in that corner of CO, too.