Host a Pepsi hackathon where programmers, developers, graphic designers, and the like collaborate to come up w/ Pepsi inspired apps, mini-websites, games, etc. People who are not skilled with programming and design can still enjoy the fruits of the hackathon's labors by being allowed to test the apps/sites created. Allow people to vote on their favorites so you can really get a good gauge of what creations people are responding the most to.