During preschool time our "bulletin board is hanging in the middle of the room.  I have four clips mounted on a beam in my kitchen.  So when preschool time is over I simply move our bulletin board over to the other two clips.  You can still see the side that says, "Check Out What We're Doing"  

It's helpful during preschool time because it partitions off the room and the girls are less distracted.

For this same reason too I have the computer in a different room.  I thought about moving it into this room but I decided it would be less of a distraction if one girls is doing computer time while the other is still working on her daily work.