A fun starter challenge. We used it to kick off Future of Stuff Challenge, but can be used in any context.
Below are the steps. We print them out as a laminated card so the challenge is self-service, opt in. The prototyping materials are tons of yummy ingredients for making appetizers. Different kinds of plates and cups also helpful. A variation on the theme we've also done is Design an Ice Cream Sundae.
#1 INTERVIEW: 2 minutes
While mingling, find a partner and interview each other about things they find appealing.
Some ideas: colors, textures, things in nature, sights, sounds, smells, shapes., etc.
#2 BUILD: 2 minutes
Use your new knowledge to build the perfect hours d’oeuvre for your partner.
#3 TEST: 1 minute
Give your hors d’oeuvre to your partner to test.
#4 FEEDBACK: 2 minutes
Ask for feedback and iterate if you choose.