Priti-laksanam -- symptoms of love is a perfect theme for spiritual economics. Two of the exchanges of love are giving gifts and receiving gifts. That is the whole idea of Spiritual Economics. but not just on one day, but every day of the year! Why not live our entire lives like that? My SE book at one time was titled "Demonstrations of Love" (and an edited version may still bear that title)
-- what better way to demonstrate one's love than by engaging in a gift economy based on devotional service to the Supreme Lord? This is practical - love in action.