Flowers taped on the wall from Decorate with flowers by Holly Becker and Leslie Shewring. (I like this, but I'd rather use little see-through vial vases in order to keep the flowers from dying too soon.
This is over the top but I love the idea of a floral maze. Or at least a floral wall. Could maybe simulate using floral wall paper onto folding chinese screens? This is garden couture at dior - thousands of flowers from ceiling to floor