5-piece business card holder intended for multiple colors. Current strip width and placements is just what appeased my eyes, widths and placements can be adjusted. Leftmost part has 2X pins, remaining pieces have thru or blind holes. A dab of glue on mating surfaces will hold parts together.
Holes are oversized for the pin (5mm dia pin, 5.3mm dia hole); depending on your printer's tolerances / shrink, you may want to increase or decrease the hole size to get a good solid fit with little to no slop.