All you need is a theme with at least four characters/items and a piece of paper for each player. That is the easiest party prep ever! If you really wanted to go the extra mile, tape or a chair for each player could also be used.
First divide the group into four roughly equal groups. Each group needs a name. This is where your party prep comes into play. If your party is a dinosaur theme you can have each group be a different dinosaur, or movie star, or color, or you can rely on the old stand by and give each group a fruit name like: apple, banana, pear and grape.(If your creativity fails you completely you can even just name the groups one,two, three and four!)
Once everyone knows their group name mix them back together and have them sit or stand in a circle on their piece of paper. The paper is just a place marker and can be taped to the floor. One player is selected to stand in the middle of the circle. The first player in the middle should place their place marker in the center, so the outer circle is minus one space.
The player in the middle calls out one of the group names. Each member of that group must now move to a different place marker, while the person in the middle seeks to steal a place.The player left without a place in the outer circle stands in the middle and play resumes.
The ace in the hole is if the person in the middle calls out ‘fruit basket’ (if you are using anon-fruity theme you may select a different phrase). This means that all players must change places.