I love themeing everything. It makes dates, fhe's and activities more memorable. Its pretty easy to start the theme with a movie, because movies have endless themes. And everyone likes watching movies. So here is a themed idea centering around PERU.
First of all choose the movie. I'm thinking Emperors New Groove or the Road to El Dorado, but any type of Aztec, Peruvian movie. You can add more details depending on the movie, I'm going to base this experience around Emperors New Groove.
To start you can go on a llama tour at the Utah Valley Llama Farm. The farm is in Spanish Fork there may be a minimum number of people in your group, but give them a call and see what you can work out.
After visiting with the llamas, go to Se Llama Peru in Provo. This restaurant has the BEST Peruvian Food around. I highly recommend the ceviche.Once you are done eating, or before you go to the restaurant. You can make sand art. Peru is famous for the Nazca Lines. Images carved into stone. But sand is easier. Find a place that has sand, a volleyball court, a beach, a sand box and use your feet or rakes and make an image in the sand. If possible make a design that you can view from above to admire your handy work. Get inspired with some ideas here.
Finally, retire to your abode and put on Emperors New Groove and admire the fact that you too have touched llamas, eating interesting Peruvian food, and experienced a little bit of Peruvian culture.