Clear acrylic signs are easier to read on a dark background.

NOTE that you may need to use a different type of screw, depending on material.

ACRYLIC CLIPS: 1/2"x3/4" clear acrylic clips. Each clip includes #6x1" flat head, Phillips, Zinc wood screw.
SCREWS: Cut 1/2 inch from acrylic edge or corner. Each hole includes #6x1" flat head, Phillips, Zinc wood screw and two #8 Nickel Plated finishing washers.
SUCTION CUPS: 2" round suction cup with metal hanger. Hole for hanging is cut 1/4 inch from the top.