• Decorate a man's den with his personality in mind. Using a specific theme, such as hunting, fishing, sports or traveling, create a room that's personalized just for him, using items he currently collects. Implement photographs, team colors or souvenirs -- and use your imagination. You won't need special skills to create a room that highlights his special interests.
  
  

Hunting

• Decorate a den for a man who enjoys hunting. Attach taxidermy animals to the walls. Incorporate a gun case, and allow the guns to decorate the room. Hang curtains in a camouflaged pattern on the windows. Place a bearskin rug on the floor. If you can't find an authentic bearskin rug, purchase an artificial one. And remember to hang framed photographs of his hunting trips.
  
  

Fishing

• Create a fishing theme. Display antique fishing poles in the room -- for example, his grandfather's fishing poles. Hang fish-themed curtains on the windows, and display a variety of fish-themed knick-knacks on the shelves. A fish-themed lamp works well to decorate a table in the room, and adds another option for lighting. Hang a fish net on a wall, and attach old bobbers or fishing lures.
  
  

Sports

• For the sports lover, decorate using a theme of his favorite college or professional sports team. Hang team-logo curtains -- and cover the furniture with team-color slipcovers. Place sports-themed throw blankets on the furniture, and display team jerseys on the wall. His favorite sports team knick-knacks work well on shelves.
  
  

Cars

• For car lovers, implement race cars and hot rods. Secure posters of cars to the walls. Posters don't cost a lot of money, and serve well as wall coverings. Display his personal car knick-knack collection on the shelving in the room. If he enjoys putting together model cars, display them in the den. Also, consider car-themed window treatments.
  
  

Traveling

• World travelers need a room to display favorite memorabilia. Use shelves to showcase items collected during his travels. Maps work well as wall art. Set a globe as the centerpiece on a side table. Display framed photographs of various countries or special vacations. Finally, place a large leather chair in the room for him to enjoy his newly decorated den.