1) Get a bottle full of Forest water.
2) Go to anywhere where there is a large stone head you can pick up (with the Power Bracelets), eg: Outset island, Star island.
3) Pick up the head.
4) Wait until the Forest water expires, then get rid of the message.
You'll now be able to run around holding the stone head as though it were a smaller object. This works with other large objects as well, such as the big pig.