A 3-D printer would be a nice toy, but unless you had 3D design software (expensive) and the experience to use it properly, there is not much you are going to do with that printer. 3D scanner won't be cheap either, and I would expect that you frequently need to "massage" the scanned file with the 3D software to get it exactly like what you want.
Not sure if you have seen this
http://reprap.org/wiki/Main_Page Looks like fun to build, but I expect the software is pretty primitive, and I am not sure if I could get it working properly after building it.