Cali Lewis, at GeekBeat, spotted a group of small, portable projection screens at CES 2013, which are shown in this short video interview. Small Pico Projectors are becoming more popular for presentations to small groups. They can be carried in a briefcase or small bag, and weigh less than a pound. I have one; but, it is always a problem finding a wall to project on. The wall surface is never reflective enough, and the room always seems to need to be darker than comfortable. These little screens cost less than $100, and can easily be carried with you. These would be great for mediations, hearings, or other presentations to a few people.