Created by Dan Robbins in the 1950s, Paint by Numbers kits were a cultural phenomenon that was embraced by millions of aspiring artists. A cross between a colouring book and a painting, these kits enabled even a novice painter to become a fine artist. The concept was inspired by Leonardo Da Vinci, who used numbered patterns on canvas to teach his apprentices how to paint. Through these kits, Robbins made painting accessible to all, ‘Every man a Rembrandt’ as the packaging said. The finished paintings from the '50s and '60s are now sought after collectors items.