This is obviously too late for you, but my favourite quick nibbly is parma ham wrapped around strawberries and smoked salmon wrapped around small slices of melon. Since they're both out of season, the next option is simply smoked salmon blinis. Little buckwheat pancakes with a spread of Cream cheese mixed with lemon rind and a curl of smoked salmon, topped with more lemon rind or caviar if you're that way inclined!
