Print in place is a technique of providing sufficient clearance for the printer not to bond to previous or neighboring layers.
Chains and chain-like objects are all over Thingiverse. Were you looking for something specific or just curious about PIP (print in place) "technology"?
Personally I like the Thingiverse "Fish Fossilz" for getting the idea across to people by making them gifts. Very simple print of an articulating PIP widget.