You don't need to have a theme when you host a party but sometimes it is more fun that way! Why not try something unique such as an orchid party. Spring is all about flowers and this one is rather precious in the culinary world. Did you know that there are thousands of species of orchids but only a handful that provide us with one of the most in demand flavors out there? The vanilla orchid!
Each flower produces one bean and the average plant will not produce flowers for 3 years. That's sounds like something to celebrate! Think of the ambience, beautiful orchids everywhere for decor and the aroma of vanilla would be amazing. The menu could be everything from dishes that highlight vanilla or savory and spicy dishes from the countries where orchids grow. Thai food anyone? It would make a good cooking class too.
And then there would be the group activity.... make your own vanilla extract that you take home as a party favor!