You'd have to move to the attic to find a groovier pad!
In this eBook, Tom Mohan describes the step-by-step construction of a gimmick used for the popular sum-up-the-numbers effect. What makes this different from the conventional do-it-yourself design is that it has distinct front and back covers!
Design variations are described- from a bold, bare-bones gimmick to a more "belt-and-suspenders" version.
Including contributions from Greg Arce and John Riggs, A VERY BRADY GIMMICK has been called "very clever" by both Kenton Knepper and Richard Osterlind.