In addition to the stone/clay based works that you might be thinking of, I find certain metalworking sculptures to be interesting, too. Alexander Calder made a bunch of red steel sculptures, almost architectural art, in addition to things like dynamic mobiles. Louise Bourgeois’s “Maman” is an interesting one, too.

There are small metal sculptures, too. From little trinkets made from wire, to welded metal parts, to elaborate chandeliers, these all involve artistic creativity in manipulating materials in a three dimensional space, and it’s a skillset that I admire and respect (and do not have any, myself).