How to display Celebration Buttons

[happily single]

Over the years I've accumulated about 4-5 celebration buttons, with the hopes of acquiring more. What is the best way to display them, knowing that the collection will grow?

 

[StinkerBelle222]

Some I have used in shadow boxes with other items from the associated trip (tickets, photos, pins, etc). Others I have glued magnets to the back of the button and keep them on my fridge. I also laminated some old unused fastpasses and glued magnets to those too