Ganter's Sandcastle

Ganter Warcrimes, the little kid found on Beach Island, is the quest giver.

To complete the quest, you must grab the sandcastle mold (which can be found right next to Ganter) and collect 7 different types of sand. Once you do so, return to Ganter and touch the sign next to him with the sandcastle mold equipped. Doing so rewards you with the ability to enter Ganter's house and the crypt beneath.

Ganter's Dialogue
"WA SOMEONE BROKE MY SANDCASTLE" 1. Shut up'' "WAAAAAAAAA" 2. i will make sandcastle again "OK YOU WILL NEED MY SANDCASTLE MOLD   2.1 a   "FILL IT WITH 7 SAND TYPE"   2.2 what do i get   "YOU CAN GO IN MY HOUS"