Choice of background materials is important to the effectiveness of your display. Don't let props dominate your work. Background material may be cardboard, wallboard, plywood, pegboard, corrugated paper, bark chips, gravel, fabric, barn boards, cork, bark, sheeting, etc. Be sure whatever you use is clean and has a look you feel good about. Color will attract people to your booth.
Color can also tie a display together and create a pleasant view.
Use a color scheme of not more than two or three colors with neutral shades for background and intense color for emphasis. Consider arranging items in color groups. Choose color combinations that have good visibility. Consider ease of transporting when choosing your display materials. Booth materials that are truly portable and can be put together quickly and easily are desirable.