I posted this as an answer to a question below but I though it could be of general interest (and easier to search). I haven't seen a commercial honeycomb attachment for a hotshoe flash. That's why I did one myself. The recipe is quite easy: just get a box of black straws, cut enough in small pieces (2-5 cm depending on the wide/narrow beam you want) and glue them together. Make a cardboard mold arround the flash, fix it (glue/tape) and then remove the flash before starting gluing the straw pieces. I finished mine off with a 5cm thick elastic band around that's only half glued to the cardboard, sothat the other half works as flexible attachment to the flash. Have fun, Gerard. Gerard.