That's quite impressive. You could try a couple of things with this...
- As you said, aluminum with kevlar wrapped around it - would make for a bulky head...
- You could also go for a very thin rod, solid, not hollow, and pad it out with kevlar at the end. this would make for a much longer burn time, since there would be more wicking... You'd then have to pad the other end for the grip, or you could cut a drumstick in half, drill out the middle and insert the rod into the drumstick so that it feels more like a drumstick to drum with.
The other option would be to grab one of these things:
http://www.homeofpoi.com/shop/productDetails/Wire-Fire-WandThat might suit the purpose, but again, creating a handle comfortable enough to drum with would be your issue. You could use the standard tennis racquet grip, that should do the trick.

Hope this helped some!