Jiggy collected upon finding all the Jinjos in Click Clock Wood. The Purple Jinjo is located on top of the honeycomb stairs. To open a world, you have to place your Jiggies in the puzzle. This may be done by pressing the A button to add one piece at a time, or by pressing Z to put all the pieces in at once. In the water is an island with a Blue Jinjo (2), underneath it are some notes.
A Winner Is You: Your reward for getting all 90 Jiggies in Banjo-Tooie; it just unlocks a character parade in the cutscenes menu (which can be unlocked by using a cheat code anyway). Click Clock Wood from the first game is the longest level by far, by virtue of it being one level, which is already fairly large, being split into four different levels for each season.