What do Men Collect?

You may have followed our company throughout the years as we have moved and grown with our heavy weight t-shirts. We have managed several different brands throughout our journey to include "Ohana", "Go Barefoot", "Old Honolulu" and others. The heavyweight t-shirt is what our customers want so we are looking to spread our wings.
Currently we have vintage Hawaiian style mini-band prints and a few larger spot prints in the same genre. We are tossing around the idea of widening our audience to include prints that support other collections. Some collections would include Golf, Fly Fishing and any other leisure sport. Many have made requests over the years but I am interested in hearing what you would like to see offered in the near future.
Women collect a diverse list of things including jewelry and shoes. Men, on the other hand, what do they collect? I have heard of the stamp collectors and those like Jay Leno who collect cars. There are the woodie car enthusiasts and general outdoor sports fans with a passion for their favorite. How about gourmet foods, music or exotic travel?
Keep an eye out for the new designs that should be starting to show up in the next two weeks. Let me know your thoughts.