Wobblers are a very effective advertising medium. They are usually mounted to shelves. Graphics are printed on a lenticular foil (the shape may be irregular) plus an flexible arm made of transparent plastic. Double-sided self-adhesive tape at the end of the arm allows to fix the wobbler easy to the selected surface. Air movement causes the it to sway. This attracts the attention of people walking nearby

Lenticular wobbler with 3D layered effect