Many of my giant characters usually don’t need to worry much about punishing as their size and power usually counter any resistance a Shrunken could do. Over powering limbs with ease to wrap around an erect cock or insert into a wanting pussy. Then the pointless struggles just add to the sensations the larger being is already enjoying.
But I have included torments that could be seen as punishments. Many have already been mentioned, Flicking spanks, cold containment, restraining/containing.
One I didn’t notice (Sorry if I missed it) is the simple squeezing fist. A Shrunken held in one hand casually. Fingers wrapped around the little body. They could restrain the arms or let them loose for all the difference that would make. Held face level and just tighten your grip. Such a simple action should make it clear to the held what choices they have.
Now, a scattering of ideas I’ve used that might be questionable:
In one story universe I had the humans have access to pills that turned the Shrunken being into a lustful plaything. Once they bound one and gave them one of these pills and just let them endure the effects without any attention or way to pleasure themselves.
Another in the same world are small animals (Mostly Rodents) that are specially bred to be aroused by tiny people. They would just drop a Shrunken person in and the animal would overpower and indulge itself.
Lastly, simple if disgusting, urinating on the tiny being. Showing they are less then human. Lower then their owner. Claiming them almost like an animal.
Wow, I seem a little disturbed. Maybe I need to rethink my stories.
HH1