Help me find my band book? please!?

okay i go back to school in a exactly 3 days... on January 7. I cannot find my Band Book! if i don't have it i get docked down a grade. I last saw it like a couple days before Christmas... I sometimes practice in the garage and in my room alot.. but i can't buy a new one cuz that one has the sheet music given to me by my instuctor. i have to find it. It's like not an option. but i feel as if i checked everywhere. and i just can't find it.. Do you guys ever lose something really important then find it in some random place that you'd never guess? well can you tell me what the place was? i just need ideas of where to look. please? it would really be appreciated.

My house is like this -

Bottom floor-Living room, Dining room, Kitchen, guest bathroom, master bedroom, bathroom,spa area, garage, laundry room.

2nd story- Living room, bedroom, bedroom, bedroom,. (sisters room, brothers room, my room.) and then of course another bathroom.

Outside- theres like this room its not coneccted to the actual house but its an outdoor/ indoor pool room... its weird. then a house we made, like one of those play house thingys except larger and for more people and older people...

(im positive its not in the outdoor err indoor pool. cuz its only a pool in that room and of course 2 bathrooms, sauna, towel room, massage room, pool toy room, sitting room, t.v. area, living room.) and i checked that entire area. and searched under ever toy, and towel, and sofa in that place. but if you guys think it might be there than say something! even if i've never played my flute or piano in there... but ya..

Thanks again! any answers help!