I've been using a glass "Noodle" that a local Glass guy makes and they run about $7 and all it is is a tube of industry standard glass with an elbow on the end. I buy 2-3 a year and reclaim much reusable concentrate that used to sit on a skillet being burned off unfortunately.
When the glass get's brittle <about 5-6 months as I dab 3-5 grams a month> or charred remenants I toss it and pull out a new one. The genius thing is that the elbow is a great catch point for collection later when you get a good build up. The place is in Taylor, MI called aptly "Puff Danny's".
Anyone else ever used such a tool? I just heat the tip of the noodle and dab til' my pains gone