Keep it personal
Make sure what you have on display shows off your personality and design taste.
Display you favorite books or items. Do you like elephants? Display one!
Consider scale and height. Use books, bowls and natural items that are different sizes to give interest and flow
One trick is to arrange accessories in groups or multiples of three
Ground the items
Small items are better displayed on a tray so that they do not look cluttered
You can also place items on stacked books to give height and ground.
Go with a theme
Different colors and shapes can work together if there is a common theme
Go with a color
If items have the same coloring, even unusual finds can work with each other.
Consider organic items like flowers, succulents or even fruit.
Add some bling
A bit of bling (silver or gold) can draw the eye in and make your coffee table pop
Do not overcrowd
Even if you have some beautiful antiques, try not to clutter
Sometimes a single item is enough of a statement