I'm slowly sliding into this year. Here's a tidbit from the (very enjoyable) 1998 BBC production of Vanity Fair. A busker, presumably Belgian, performing Rule Britannia on Almglocken (tuned alpine bells).
If you'd like a set of your own, you may purchase one for a few hundred dollars.
If you'd prefer something more substantial, here is a limestone xylophone.
Actually the "xylo" in xylophone means "wood," so this is a lithophone. You're on your own finding a vendor.