I can't believe that you have nothing to offer. Most of this art stuff is using your imagination to solve problems.
Rock carving sounds interesting.
As far as the Foredom tool, check ebay. They have all sorts of flex-shaft tools. Some friends of mine have had good experiences with e-bay. Maybe some members of this forum will have some input. The flexshaft tool isn't a problem, however other used lapidary equipment is very hard to find.