These are lovely and can be used any time of the year for any event - Doily lights.  Plain doilies attached to standard low voltage christmas lights.  These are heart doilies but I imagine you can trim ordinary doilies to what ever shape according to the event.   I have already purchased heart doilies and plan on using them for christmas - http://www.elizabethannedesigns.com/living/2010/12/21/handcrafted-holidays/