Immovable Rod

This flat iron rod has a button on one end. You
can use an action to press the button, which
causes the rod to become magically fixed in
place. Until you or another creature uses an
action to push the button again, the rod doesn't
move, even if it is defying gravity. The rod can
hold up to 8,000 pounds of weight. More weight
causes the rod to deactivate and fall. A creature
can use an action to make a DC 30 Strength
check, moving the fixed rod up to 10 feet on a
success.