Here's a tip for teachers that have classrooms with acoustical tiles. When I want to hang pictures, windsocks, bulletin boards, etc. from the ceiling, I unbend a paperclip and tuck one end under the metal supports that hold the tiles up. I use the hook end to hang up the student's work. I loop string through all my projects and use a yard stick and/or stand on a kid's desk to get to the places I can't reach.