Ask HN: What are the emerging technologies still in their infancy/hobby stage?

Sex machines / Personal satisfaction robotics. I'm not talking about "realistic sex dolls"; I'm talking about "soft robotics" massagers that stretch the boundaries of mechanical motion with small pneumatics, hydraulics, and kitchen cast silicone rubbers.

The future is out there, and its wiggly

Toilets that don't use water or a sewer system

VR

Headless CMSs somehow