It's amazing how often churches complain about their Facility and "interior design" committees being the bane of CE. Problem is, we also want people to LEAD and take their responsibilities seriously -- and there's the rub. Some are naturally protective, and perhaps have been "burned" in other churches or past experiences in yours where someone did a horrible job of decorating (it happens!). Some old-timers have lived through the youth group painting their own room and getting paint everywhere, you know?
And sometimes, people are afraid of your mess blowing back on THEM. Been there with that too!
In one church where I volunteered as a pastor in the pew and Sunday School leader, we were told we couldn't attach anything to the walls in one classroom. No real good reason other than they were just used to not doing much in the way of creative décor, and didn't want "holes in the wall."
We wanted permission for an Oasis and Nile river mural and were shot down. After the anger passed, we took a step back and then sideways to accomplish our design in a different way. Solution: We took them LITERALLY. We constructed an "Egyptian" looking wall out of boxes that stood "against" the wall, but not connected to it. We brought in a bunch of five foot ficus trees and taped a bunch of paper palm trees agains the wall. For a pyramid we covered a wood frame with canvas drop cloth. Everyone loved it, and frankly, it was BETTER THAN PAINTING.
Funny thing is, now they are onboard with whatever we want to do, including painting, ...as long as they didn't have to do it or pay for it 
God works in mysterious ways.
