This the fun part. There is no hard rule, you can display your tackle the way you like it. Here is just some suggestion.

• Display cabinet. This is very common. The good part of using display cabinet, you can light the cabinet and control the mode of the display. Further more the takles are also protected from the external element like the dust.
• Hang on the wall. This is very interesting especially if you want to display a classic rod along with you antique reel. Just make sure to clean any accumulated dust.
• Small display rack. Small display rack is nice if you have a small number of takcle to display. If possible find the glass based rack. Again make sure to clean the dust from time to time.
• Your car dashboard. Just make a mounting for your tackle and place them on you car's dashboard. Use a double sided tape to secure the mounting from moving around. Since the space is quite limited only a small takle are suitable. Lure and fishing reel are a good candidates. Caution : rubber and plastic part tend to deterroriate much faster with the present of direct sun light. So please consider this fact before placing your item on your card dashboard.