Here is an aircraft that I built several years ago from CoraPlast, using a set of plans for a "Floppy Disc" purchased from Model Builder Magazine. Altho round by design, the pumpkin idea was mine. Flourescent yellow trim paper is used for eyes, mouth, & nose. Diameter (wingspan) is 24", power is geared TopGun (05) with 7 sub C cells.
Happy Halloween!