Decorating with tissue paper pom poms may be a great alternative to hydrangeas if I use light blue tissue paper. This is my attempt with recycled pink tissue paper ... not to shabby :)
This is a picture I found for inspiration:
Actually, I'm thinking of decorating the church with white pom poms going down the aisles [the church has blue-gray carpet so we need some white in there]. The blue pom poms may be used to indicate reserved rows and used at the reception somehow.