Immovable Rod

Use an Action to press the button, which causes
the rod to become magically fixed in place.
Until the button is pushed again, the rod doesn't
move. 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 ft. on a success.