If you open it, close it.

If you turn it on, turn it off.

If you unlock it, lock it back.

If you break it, fix it.

If you cannot fix it, report it.

If you borrow it, return it.

If you make a mess, clean it up.

If you move it, move it back.

If it does not concern you, don't make a mess.

If you do not know, ask.