I can, but it depends on how much of a DIY guy you are. I bought a couple M40 Gas Mask Carriers at a surplus store and reworked them into crash bar bags. When they were on the V-Strom, they looked like this:
They had full length velcro on the flap, so they stayed closed. I just cut all the straps off and added some two sided velcro tape on the back of the bags, positioned so it would wrap around the crash bars. I sewed a nylon webbing handle to the top of the bag, so it was easy to carry. They were dirt cheap when I bought them (maybe six bucks each, it's been a while). The nylon is really heavy duty, and these things wear like iron.
Eventually I got a new bike, and reworked the bags to fit that one. I got rid of the velcro closure, and sewed some straps with quick release buckles to them. I had to move the velcro straps around on the back to fit the new crash bars. Now, they look like this:
They were even black for a while, when I used some Krylon Fusion paint on them. That stuff was supposed to work on nylon, but the results were less than satisfactory, so I washed them about five times and got rid of most of the paint.
Alternately, you can find a lot of choices for potential crash bar bags if you look for front panniers that touring bicyclists attach the front forks of their bikes. A lot of them are sized just right for crash bar bags.