Village decorations that allow the Meems to celebrate "Watermelon Halloween."

Once certain in-game conditions are met, these decorations can be constructed on empty plots in the village.

Watermelon Scarecrow / Watermelon Arch → Becomes available after completing the construction of the Ouch Guard Statue
Watermelon Bell / Watermelon Fence → Becomes available after completing the construction of the Rock Breaker Statue

Includes:
Watermelon Scarecrow / Watermelon Bell / Watermelon Fence/ Watermelon Arch

More details on the official game page of Watermelon Halloween Set ...