Enfu is probably the most prolific artist I know who creates Japanese anime influenced graphics. He gives each character multiple purposes: they sometimes work as the main graphic, patterns, products and more.
What particularly fascinates me is one of his recent inventions, Trucker hat with multiple snaps. First, you choose the colour and visor pattern of a hat. Second, you can choose the main character on the hat. Then, you can snap on several metal pin snaps on the hat, and each snap has its own unique character on it.
So you can create your own custom hat or Enfu can keep expanding his product line, and every product is unique yet very affordable. I never get tired of looking at his creations. So much energy!