Promoting your youth: pictures on walls

Line dull, blank halls of the church with photos of youth events and youth in action. Print on plain paper and mount on poster board, attach with a non marking sticky system. These pictures are light so it isn't necessary to have real hangers.
If someone objects, offer to share the walls with other groups (they probably won't take the time to put together the pictures.) But keep insisting that “dull, blank hall walls” are an eye-sore and a turn-off for visitors.