Drone machines

[Leatherface]

What Drone Machine do you recommend me?
I already try the Drone Lab, the Sleepdrone, and see video about the Grendel Drone commander.

[tiny_tove]

I use these two:

D.R.A.R.T drone generator:
http://www.youtube.com/watch?v=f1t1WssPOkA&feature=youtu.be


CY 808: http://www.youtube.com/watch?v=KS1owfyzFdI
I have the second prototype of this. Now it is offically part of the lumanoise family:

http://tonylight-leploop.blogspot.it/

[nullify]

I was recently playing with some software drone boxes on my phone.  Tanpura Droid is great as you can get it to oscillate and play forever.  There were a few other tone generators as well that were free or of nominal cost that were fun to dick around with and could make for interesting performance / recordings.