This is my travel strobist rig
SB900 powered by SD8A on 36 inch JTL stand with 24 inch Westscott umbrella.
I use this setup for travel because it fits in my suitcase
I use this setup on my full size stands also, but this image shows the adapter best.
ballhead - Manfrotto Lite Tite
Swivel+Umbrella Adapter 26
coldshoe - Stroboframe Shoe-type Flash Mount Cat. No 300-SHO
Layed out flash example:
One additional advantage I found with the ballhead set is the ability to quickly rotate the flash body to align the IR sensor to face the camera.