I have been focusing on speed lights recently, especially with the release of the radio wireless SB5000 (incredible flash). I have been using a lot of Rogue flash accessories to create my images, especially the Flashbender 2 XL. This is a very versatile accessory; you can bounce flash off it, add a diffusion panel to make a soft box, roll it into a snoot, or even use it to flag unwanted light. Take a look at the their instructional videos here.