58mm Two Piece Lens Adapter for Canon Powershot G10, G11 (an alternative to the LA-DC58K) - Walmart.com
Bower Nikon F to C-Mount Adapter
Bower AB43EOS Micro 4/3 Camera to Canon EOS Lens Adapter AB43EOS
T-Mount to Micro Four Thirds (4/3) Mount Adapter for Panasonic G1, GH1, Olympus PEN E-P1, E-P2, and other Micro Four Thirds Cameras - Video Camera Center
Amazon.com : Bower LA-DC58L Conversion Adapter Tube (58mm) with Battery + Wide Angle & Telephoto Lenses + UV Filter + Hood + Cleaning Kit for Canon PowerShot G15 & G16 Digital Camera :