I purchased quite a few of these things, and rather than put them in paper jewelry boxes and leave them in a flat, I figured I'd have a little fun trying to make some sets.  These four worked out to be a rather nice butterfly-- if you have metal smithing skills, you might consider setting them more permanently.  

Please note: the given dimensions are of the arrangement, as mounted.

The slices are mounted in a perky box, hot glued to a bit of white card stock to better show their color.  I removed some of these sets from their backings to reposition them with no problem, but if you are feeling especially cautious a quick immersion in rubbing alcohol will loosen them nicely.