Hit and Rock
One example of this is "Hit and Rock", which is a variant of Accuracy landing devised to let people of varying skill levels compete for fun. "Hit and Rock" is originally from POPS (Parachutists Over Phorty Society). See the POPS main site. The object is to land as close as possible to the chair, remove the parachute harness, sprint to the chair, sit fully in the chair and rock back and forth at least one time. The contestant is timed from the moment that feet touch the ground until that first rock is completed. This event is considered a race.
I've never seen this before! It sounds like a lot of fun, though, and adds more to the skydiving than just the jump and float.
I would surely struggle with the harness more than anything, I think.