Rogue has been putting out some great speedlight accessories recently, updating and adding to their extensive line of products. I have been using their XL Pro Reflector, grids and their large flashbender (as a snoot) with great results. They recently added a soft diffusion screen to put over their XL Pro, creating nice soft light.
They also offer a grid to fit over the XL reflector. This narrows the spread of light, and is very helpful for portraits. In the image at top I used a Rogue 25 degree grid to light the model’s face, and the XL reflector with grid to as an accent light for her hair and shoulders. Many speed lights today zoom to 200mm for a nice concentrated light, but this is not as narrow as you can produce using grids with your speedlight. Rogue also offers colored gel inserts to the grid system, as well as gels to attach directly to your speedlight. They have a new tightening strap that is a part of the grid and reflectors, no need to search for that velcro strap in your case. Check out their products and some great instructional video at Rogue.