That sounds like fun, Noel. Have you seen the book "Legacy, Jewelry
Techniques of West Africa"?
It nicely shows how few tools are strictly needed to make some very
satisfying jewelry. I think the key when traveling is to stick to
certain favorite techniques, and not expect to do every and all
things possible in a large shop. I traveled, when much younger, with
all my tools in a large hard-sided briefcase. It was fun. Your
little motor will be nicer for polishing than the electric drill I
carried then. Have a great time!