For kids a treasure hunt is the absolute highlight on a pirate birthday party. Just get some treasures, like chocolate coins, funny pirate stickers, clip earrings and gems. Put them into a treasure box and hide it somewhere in your house, garden or backyard.
Now create a suitable treasure map that brings the kids step by step closer to the hidden treasure. In order to achieve their goal, they have to solve smaller tasks in stages.
Once the kids have found the coveted treasure, they can divide the small gifts up among themselves and take them home later.