Energizer

Four Up
Everyone starts by sitting down. Anyone can stand up when he/she wants, but must not remain standing for more than 5 seconds. As soon as someone sits down, they can stand up again. The goal is to have exactly 4 people standing at all times.  Time requirement: 1 minute. Best group size: 8 people

Words From Your Partner's Name
On a sheet of paper the two partners write their names and attempt to make other words using only the letters included in both of their names. After a set time, the group with the most new words wins.