I bought a lovely metal hood from eBay for my 35mm. A clone of a Voigtlander original at a fraction of the cost. It looks great on the lens but everyone of my shots had serious vignetting when in use.
Have dropped it from daily use now :-(
Canon EOS30, Contax G2, Zorki 4, Zorki 4K, Bessa R2a, Lomo LC-A, Olympus XZ-1, Olympus OM2-SP and Olympus E-510, Fujifilm X-Pro 1