The croupier mentions that the tourism in Goldpaw is picking up, but is afraid that he won’t have the time to pick up a birthday present for his son. You agree to help and he hand over 10,000 guilders to pick up a toy over in Broadleaf. Teleport to the Entrance and the toy shop will be right there next to the entrance. The man behind the counter says that his machine to create the yo-yo is broken and that he needs an enigma prism to fix it. You can easily get one of these from either Mining Camp No. 4 or 5 in your kingdom, so return to the shopkeeper when you do have one. Hand one over and he’ll give you the magic yo-yo, so return that to the croupier, but he wants you to find his son for him to tell him to go to the casino. Luckily for you, he is marked on the map (on the bridge just west of the inn), so talk to him to finish up this quest.