Book day costumes?

[jmh740]

Does anyone have any cheap easy ideas for book day costumes? I was where's wally last year but don't want to do that again this year.
Thanks

Mary Poppins? Long skirt, blouse, red ribbon, hair up, big bag, umbrella.

Burglar Bill. Mask, striped top,tin of beans, big brown box with little holes in it.

Willy Wonka: Oversized jacket and top hat, maybe a bow tie.

Hermione Granger: curled hair, blouse, tie, dark jumper, wand (pen with paper around it?)

Tracy Beaker: t-shirt, jogging bottoms, denim jacket

Matilda: knee-length dress, cardigan, ribbon in hair

Brown trousers and top, stick man?