With things, the lower it is to the ground the better.
Beds which are on the ground (no bed frame)— Japanese tatami style. Or how Koreans sleep on the ground.
A lowered performance car.
Doing bench press or dumbbell press on the floor, not using a bench. Connection and friction with the ground is best.
Also, deadlift. Sumo deadlift, with the barbell and weight on the floor.