I have six expensive necklace charms from years ago. They are:
A butterfly
A key
A fairy
A tree
A heart
A swirl
Do they represent things. Like elements, peace, etc.?
Butterfly-tansformation, beauty
Key-releasing something, binding
Fairy-magic, fantasy
Tree-growth, nature
Heart-emotions, love
Swirl-eternity, movement
These are just suggestions though. With this kind of thing it's important to remember what they mean to you.