I gave each table a pad of post-it notes (this was a great way to use those different shaped pads I'd been collecting!)
Each table elected one person to do the writing, and one person to do the running.
I then posted two word families. At "Go!", they would come up with a word for either (or both) word family. Writer would put the word on the sheet, and the runner would go up to the board to place their word.
I would stand at the board to prevent duplicate words. So when the Pink Team got "dog" placed up there first, no other team was allowed put that word there, too.
When the buzzer goes off, the team with the most words wins! (In this case, Green Apple Team was the winner.)
The kids loved it! We'd do it at least once a week, using two different word family prompts.
Click on the photos for larger versions.