Every year at work,we do a Secret Santa, where everyone puts their name on a piece of paper and then we all put them in a box. One week before school breaks up we each take a name out of the box and buy that person a nice (and appropriate) present, so we have to do a bit of a background check to find out what that person likes.
Every day last week we had Secret Cupid Week. Same principle, we filled in a quick questionnaire about our likes etc, what would you take with you on a deserted island, what's your fave colour, chocolate, music, perfume etc and then put them in a box. We each then picked one and had to leave little treats for our Secret Cupid in their pigeonholes or on their desks each day.
I got some bubble bath from the Sanctuary, some red carnations, chocolates, a bar of fruit and nut, the Footprints poem, a picture of Captain Jack Sparrow and some cherry flavoured lip gloss. It was lovely going in to work everyday with something sweet in my pigeonhole. It was a great success in terms of morale boosting too so I think they may well do it regularly.