I think that by definition a proper beauty dish is neither small nor portable.
If it is, the light won't be the same at all. You might like to look up McGillicuddy http://www.art4artssake.co.uk/light-modifiers/36inch-multimodifier.html
Edit: don't want to get into an argument about it, but the light from a silver brolly 'can' under 'some cicumstances' be very similar to a BD.
Richard is right when he saysI wont use brollys outside after the last time when it blew over and destroyed my Sony flashgun :-(
. I used to use a 1.5m one, years ago, and it was a wonderful tool. In this game, there are always people who make tiny versions for hotshoe flashguns simply because some people will buy them, but the small ones don't behave like beauty dishes and don't even come close.I think that by definition a proper beauty dish is neither small nor portable.
What I want is some way to direct my light without using a snoot (it directs the light, but I don't want a straight line of light). Something which perhaps gives a 45-90 degree burst of light.
Any thoughts?