Scotch Signs and Numbers Mounting Strips 8-Pack 1-in x 0.25-ft Double-Sided Tape in the Double-Sided Mounting Tape department at Lowes.com
Amazon.com: Command Picture Hanging Strips, Value Pack, Removable, (8) Large 0.63 X 3.63 Pairs, (4) Medium 0.5 X 2.75 Pairs, White : Industrial & Scientific