I had never heard of 'Metamachy', but when I started Googling it, it brought me to this wonderful History-of-Chess website, where I found the first picture I posted in the Metamachy description. Two of the unorthodox pieces there looked quite familiar (because I actually own those). In the page I linked to here, it is actually explained where the pieces are from. The Elephant and Cannon in the Metamachy picture come from a Staunton Xiangqi set (of course). The other two (used as Camel and Prince) from an exotic design for normal Chess (where they were Knight and King).
I don't know if these other sets can still be easily obtained somewhere. I know that Superchess is still alive and kicking, though: Oct 17 was the 12th Dutch championship for it. They sell dozens of different pieces; the set depicted above is one of the smallest. They are not very cheap, but for pretty large wooden pieces, not unreasonably priced. (The Exchess 1 set with 2x8 pieces (you get two of each of the two Pawn models) costs 40 Euro.)
Exchess set 2:
Exchess set 3:
I like my own handiwork on a Staunton Cannon too:
I need to find a Metamachy set for most of my pieces... Unless someone can think of something better?
You mean as depicted here?
I suppose great minds think alike. haha
But, on the other hand, a few of these pieces kind of sort of look like my invented pieces. (Which I was hoping to post to the "Post your Set" thread.)
What to do now? ^-^