My son just got back from business trip to Vietnam. A coworker with him went to a Vietnamese Water Puppet show and bought a water puppet that he showed my son. My son told him of my puppet obsession and how I made him help with my puppet shows when he was young. Later the friend ran into him at the air port and gave him a gift for his mom. It was one of the water puppets! It is very unusual. It has thin threads coming out of his behind that move his limbs.  I found a website about them https://vietnam.travel/things-to-do/vietnam-water-puppets.