A manual projector screen is one option for this, the 96/96 screen is a modest size.this manual screen is a pull-down type,but unlike the remote -controlled electric/motorised screen, the manual projector screen is controlled manually with a string.

pull-down type projector screen

mounted on the wall or ceiling 

ideal for meeting rooms,classrooms or other presentation venue 

finished in quality matte white fabric 

screen is square type

with durable white casting.