We just pledged and backed this Kickstarter project by MagMod: Magnetic Speedlite Modifiers for Hot-Shoe Flashes
Here is the description from MagMod:
MagMod is the simplest, easiest, strongest, fastest, and sexiest speedlite modifier system for Canon + Nikon hot-shoe flashes, period.
MagMod is a magical flash modifier system that frees your speedlite flashes from velcro, straps, and adhesives by geniously incorporating the invisible powers of magnetism. Each modifier is a single molded piece of high-quality silicone rubber that is sleek, compact, easy to use, and dead simple.
Universal One-size-fits-all Band
First, each modifier attaches to your speedlite by magnetizing to the MagGrip, an elastic, one-size-fits-all band that stretches around almost every professional hot-shoe flash created. Hallelujah!
We’ve tested it with some of the biggest flashes, like the Canon 600EX and Nikon SB900. Even some of the smallest like the Nikon SB600 or an old Sunpack Auto30DX, it’s fitment is equally as strong.
Incredible Magnetic Power
The MagGrip is embedded with two freakishly strong Neodymium “rare-earth” magnets that instantly, silently, and securely attach each MagMod modifier to your flash. There are no straps or separate pieces to lose, just attach it and forget about it.
Super Strong & Durable Material
Silicone rubber is incredibly resilient against snapping and breaking and retains 99% of it’s elasticity over time. This means the MagGrip will firmly grip your flash even after long periods of use, and will never accidentally detach!
For more details on this project, you can visit the Kickstater page : https://www.kickstarter.com/projects/spencerboerup/magmod-magnetic-speedlite-modifiers-for-hot-shoe-f
You can also visit Magmod for more info on their products at : http://magnetmod.com/