I picked up a couple at REI a couple of months ago. The small one holds my Arc LSL flashlight pretty well, and the medium sized one holds my leatherman wave. They are made by a company called "Rainbow" At REI, the price wasn't too bad, at around $5.00 a pop.

Here is the REI link: http://www.rei.com/product/782.htm

Here is the web site for the manufacturer: http://www.rainbowofcalifornia.com/i

I am sure that their stuff is not the absolute sturdiest compares to the other brands, but they are affordable and easy to find if you live near an REI.

BTW: The reason that I chose those cases is because they allow horizontal carry. Much nicer, as it keeps my Leatherman Wave close to me. Now, it snags on things a lot less and is more comfortable.