I've always loved to arrange these in odd number sets, small, large, in stands or without. Try a combination that you think you might like.
Small Luminario with stand (3 heights)
These luminarios can be displayed without the stand, or grouped together with the varying stand heights, 6", 7 1/2", 9 1/4"...
Small Luminario with stand (5 set)
Here's a grouping of Luminarios that looks great on a buffet table...