Have the children gather in a circle with their stuffed animal or bedtime buddy they sleep with. Tell them to look around the room at everyone's buddy. Then have the children place their bedtime buddies in a large box in the middle of the room. Mix up the buddies and pick one child to match a buddy (not their own) to another child. The kids must stay quiet and not give any hints. If the child gets it right, she gets another turn. When she guesses incorrectly, another child gets a turn, until everyone has his or her bedtime buddy back. The children can also play musical sleeping bags, putting their bags in a semi-circle in the same manner you would with musical chairs. Take one sleeping bag away. The children must walk around the sleeping bags and lay on one when the music stops. Allow the child who is out in each round to start and stop the music.
Have the children lined on one side of the room with a pile of pillows in different colors on the other side of the room. Assign each child a color. When you say go, the children must race across the room and grab a pillow in their assigned color and bring it back to their spot. They can only grab one at a time, until everyone has all their pillows. Keep it non-competitive by encouraging the people that finish first to cheer on the other kids. Another racing game you could play is pillowcase racing. Just as with potato sacks, have the children step into a pillowcase and hop from one end of the room to the other.
These games do not need to be played in full darkness, as preschoolers would be frightened; just make sure the room is dimly lit. Give one child a flashlight to play flashlight tag and help him count to at least 20. The other children are to hide around the room. The person who is it searches the room with his flashlight, "tagging" them with the light as he finds them. The last player he finds gets to be it for the next round. Another game the children could play in a dimly lit room is the shadow game. Set the flashlight against a bare wall and hold up a sheet between the wall and the light. Assign one child to be the "shadow master" and have the other children go behind the sheet. Bring the shadow master back in the room. One at a time, the kids behind the sheet walk in front of the light. The shadow master has to figure out who it is just from their silhouettes. Allow everyone a chance to be shadow master.
Have the children play the game "Mr. Bear," in which one child pretends to be a hibernating bear. The other children pretend to be campers and slowly walk toward Mr. Bear, whispering repeatedly, "Mr. Bear, Mr. Bear, are you awake?" When the children are very close, they yell the phrase instead of whispering. Mr. Bear then wakes up and chases the children back to safety. If he tags people before they reach the safe zone, they become his cubs and help him capture more kids in the next round. The game continues until everyone becomes a cub. In another imaginative game, the children pretend to be different sleeping animals. Have the children jump around in a circle until you call out a sleeping animal such as "sleeping dog!" Then, the children must stop, lay down and do their best sleeping dog impression. Call wake up, and they can jump around again. Call out other animals such as cats, hamsters, lions, monkeys and giraffes to see how they think these animals sleep. Expect strange positions and plenty of giggles.