[Mark C]

I've been considering this too. From what I can tell, anything can be lined with spanish cedar, but solid hardwood is probably best. It'll have to be built relatively tight, no gaps around the doors, drawers, etc. A little caulk around the interior edges, and weather stripping around the doors where it contacts the cabinet will go a long way.

And find one that doesn't smell like old socks!

That's just what I've been looking at from reading about other conversions, hopefully someone who's done it can chime in.