Another option should be to save the roaches and make a "chocolate" blunt just take the bud from the roaches and roll it in a blunt or a j. The weed is so resiny and messes you up so quick.

I voted for grenading it (in a water bottle) which is also a great way to hit the roach. You just have to be skilled making the hole not to big and not to small. Oh yeah and don't forget to make a carb, so you can clear the smoke.