I always believe in making use of vertical space. It's great to create different viewing planes...more space to capture the eye of your customer. I placed a 18 beads on my "neutral" gray business cards and velcroed them to fabric boards.
This Teapot is from my cake show days...made by an old business partner. Take an old teapot. Form spirals on several pieces of 16 gauge armature wire and feed ends through the bottom end of a funnel. Plop some glue down the funnel so the wire doesn't come out. Glue funnel upside down on teapot and glue the lid off kilter on front... I used this for card displays at stamp / cake shows but it's awesome for earrings! I elevate it on a plastic display and keep extra earrings of a similar style stashed under there. You can see the under side in the photo above.
Out front, I use baskets filled with rock salt to display necklaces. Many beaders use rice but I find that makes my jewelry "scummy." Salt is much cleaner. There was a kid there that had had the stomach flu and squeamish me kept reminding myself, "Bacteria can not grow in salt!"
I collect small metal trays every time I'm in China town and I use these to fill in holes on the table:
My emergency addition for this show was something to display my wine toppers. Am I ever glad I had it cause I sold so many! I took a 4x4 and drilled 1.25" circles in it! Worked fine...not that sophisticated but eye catching all the same!