Next to the yellow balloon beside the Garden Stage. There's another one at Cloud Coaster Land; try to pop as many balloons as you can, and after they explode, you will find one. 3. Blue - at the top left corner of page 15 of the Weekly. (To the left of the question titled "Obi's Little Investigation" (Pages 15-16), there is one at the top left corner.) 4. Yellow - On the open ground at Alien Castle, there is also a pit; just swipe it with your mouse, and it will appear. Also...