Two circles of people with one circle inside the other circle. After talking with each other for a set time the outer circle moves in a clockwise direction. They can move one or two people (what ever is specified) and then talk/discuss again.
People in groups of three spaced around the room. After talking and sharing with each other for a set time one person moves clockwise, one person moves anticlockwise and one person remains. Then people talk/discuss again and move again.