Displays and trade show booth design can be as complex as floor-walls-and-banners to draw the crowds in, or as simple as a logo tablecloth and tri-fold portable. I've worked on both.
Using the right graphics to attract attention to your booth, organization's mission or products isn't an exact science. It depends a lot on what the environment will be where your display will be viewed. Most clients need something flexible for a variety of locations, so the removable panel graphics which velcro-bond right to the display itself work really well.
I also have worked on full vehicle wraps for a plumber, a local HVAC company and others.