Make Pop Art
Cut a 2-inch square of duct tape and place it in the center of a 12-inch-by-12-inch canvas panel (from $2, at craft stores). Surround it with four 6-inch-long pieces of tape in a contrasting color, slightly overlapping the edges to form a bigger square. Repeat with four 10-inch-long pieces of your center color, pressing tape down firmly.
Tape: Scotch Cherry Red and Sea Blue; Scotch Green Apple and Cherry Red; Scotch Violet Purple and Sunshine Yellow