let me start off with... this idea seems pretty cool.
i found a few things, but i also have a few questions: how formal is your wedding? what time of year? indoor/outdoor or both?
i quickly searched the internet and this is what i found...
food: scones, muffins, pershuto wrapped around cantelope, mini sandwiches, mini tarts, mini quiche, lots of fresh fruits, petit fours that say "eat me"
drink: teas from all over the world, have your guests sweeten their tea with lumps of sugar, so they use little tongs (so cute). you can even color the sugar and make your own cubes.... VERY EASY TO DO
i found these web sites...infraredherring.com/2005/08/12/tea-party-success/
i also found this one with very cute favors and/or centerpieces/decorationshttp://www.weddingfavorites.com/p-WCKTPT.html
look around on the last one... there are mini tea pots that could be favors, there are also wire forms of tea pots that could be used for your centerpiece. very cute