Elle Decoration, various wood and rustic objects are grouped together to form a sculpture-like display:
photography by Debi Treloar
You can also group your treasures by color, as this shot from Apartment Therapy shows:
There are no hard and fast rules for building your displays, but one helpful tip: don't try to cram every single item in a collection onto your ledge, mantle or wall. Select just enough items to be balanced within the room, and then rotate in other items every month or so to keep your collection fresh.
The next time you feel an urge to change up your space, don't buy something new; instead, take a new look at what you already have. Challenge yourself to put together a display that shows your guests who you are and where you have been.