The first team to finish wins. Make a list of different items that need to be found. You can divide the people in to teams or they can play individually. It would depend on the number of guests you have or the ages of the players how difficult you make the list. Gather some fall, harvest or Thanksgiving items and put them on a cookie sheet.
Small items are best and using a theme is fun too.
Cover the cookie sheet with a dishtowel and put it aside. Give each person a pencil and paper. Set the timer for 1 minute. After the timer goes off cover up the cookie sheet again. Set the timer for 3 or 5 minutes.