I bought one of this bar after I saw it on MTBR. It's wide but does not stick out too far which is probably not really what you wanted, but the price is right. I got the BNC204 model which has two bar clamps. Here is a picture of it on my MTB.

If you don't want the two bar lights or flashlights on your handle bar, you can mount it to the bottom of the drop. I mounted mine like this. Just don't do what I did and that was using zip ties for the wires. I was way too lazy to undo the bar tape and wrap it underneath....one day. You can also do the same with the flashlight like this.

One more DIY is to take a PVC pipe and a PVC T and make your own extender. You can cut the tail end of the T or the two side for whatever length you require. You can use a flashligh mount to attach the DIY extender to the bar or even clamp it under the stem. If the angle of the T is wrong, you can use a heat gun and heat the PVC pipe and bend it to any angle you want. Paint it before mounting it.