Hmm...I think you'll need the Marvellous Compass. Y'know, the one in Super Paper Luigi? The one Xzelion and SPL were making?
Boolister, Super Princess Peach Wii

Boolister is a blue Boo who lives in Forest Island in Super Princess Peach Wii. He gives Peach, Perry, and Patty directions and tells them to find the Marvellous Compass in Super Paper Luigi.