Take just about any ball with a weatherproof surface, such as a beach ball, and use a permanent marker to write questions for participants to answer. Have your group form a circle and toss the ball from person to person, taking turns to answer the questions on the ball. I instruct people to answer the question their left thumb lands on. Use duct tape to cover old questions and write new ones. Consider themes such as the get to know you questions, like "What is your favorite food?" or "If you could have any superpower, what would it be?"
Questions can be themed to meet just about any need from "pop quiz" questions on a subject you've taught to more theoretical questions to generate conversation in the group.
The Buffalo Song
Best sung in a circle with clapping.
All: Buff-a-lo, buff buff a lo Buff-a-lo buff buff a lo… repeat 2x
Caller: Hey (Name)
Name: Hey what?
Caller: Hey (Name)
Name: Hay what, hey what?
Caller: Show me how you buffalo
All: Show us how you buffalo!
Name: My hooves are high, my hooves are low, and this (demo dance move) is how I buffalo!
All: Her hooves are high, her hooves are low, and this (repeat dance move) is how she buaffalos!
All: Return to Buff-a-lo, buff buff a lo Buff-a-lo buff buff a lo… and repeat the song from the top. The named becomes the next caller. The song ends after everyone has “buffaloed” once.