Guide (if you're stuck)

A quick guide to all item locations if you're having trouble ;)

Chica's cupcake: On the mantle by Bonnie at the front door
Bonnie's guitar: In the kitchen
Foxy's hook: In the downstairs bathroom, near the living room (where Foxy is)
Golden Freddy's mic: In the bookshelf across from GF's room
Freddy's hat: On the table outside Chica's room

Hope this helps, enjoy :D