OK, guys, I need the cooks out there to put on their thinking caps and give me some ideas.

My husband and I are going to a coffee/dessert party this coming weekend in honor of a few professors in his building who just got tenure. The hosts of the party asked for volunteers to make desserts, which I did.
The catch comes in due to the requirements. One, they have asked that we made desserts that a "nicer than simple picnic fare" (which I take to mean no cupcakes, run-of-the-mill cookies, etc.) and two, they also want things to be in small portions so people can sample different things (which I assume to mean it will be a party where you stand and mingle with finger food, not sit at tables where you can dive into a big piece of cake, etc.)
Obviously, these things are a bit contradictory -- nicer desserts that are also small enough to eat while mingling -- so now I'm stuck for ideas. Any suggestions? Recipes? Preferably for things that don't require specialty equipment/pans that I'll need to try to track down in my small town with no shopping mall?
Oh yes, and I haven't heard an exact guest count yet, but I'm assuming it will be in the 30-40 range, with at least a few other people bringing desserts as well. (In other words, I don't need to make enough to feed an army, but I do need more than just a small family size serving.)
Any help would be appreciated!
Kathy