An assortment of teas (Earl Grey, breakfast blend, chamomille, mint, jasmine - I’d get a mixed box). Also if you want to desi-fy it, serve kashmiri chai for a change. Provide milk, cream, lemon, honey, sugar (even this can be fancy - brown cane sugar or sugar cubes). As for other drinks, I’d limit it to a nice fruit punch and juices and stay away from carbonated beverages or even coffee.
For the menu, you must have finger sandwiches!!! The classic cucumber sandwich, smoked salmon, a nice chicken sandwich (chicken salad is the easy option - I’d think of changing it up a bit), egg salad, etc.
Assorted cheese tray with an assortment of crackers. I like the tray to have variety of shapes, flavours and colours, so I select crackers based on shapes - rectangle, triangle small round, large round. I also cut my cheese in different shapes, cubes, rectangular slices, square slices. Include one soft cheese (brie is a good one).
Sweet and savoury pastries (sweet - small eclairs, cannolis; savoury - spannikopita, pastry sheets filled with ground beef/chicken, even mini samosas).
And have a full complement of sweet things: petit fours, cookies, scones, little cakes with frosting.
The key is presentation and the food must be in smaller portions (though lots of it).
Serve on fine china if possible and set up the space to have an elegant ambience.