A Vapor Brothers. They are small enough to fit in many drawers. Silent, unlike the heat gun types. No moving parts. You can stop in "mid-vape", go talk on the phone for 15 minutes, and take up right where you left off vaping, with no lost THC! Without the whip, they look like a funky electic pencil sharpener.
And yes, a friend (who uses) came over one minute after the hubby and I used the VB- I was returning it to the bedroom when she knocked. I had some very mild Japanese incense (the 100% natural type without the wooden stick) going- she didn't smell anything pot-like. The VB is worth the $135 I paid for mine. My lungs are far happier.
The "el cheapo" knock-offs are not as good. I bought one and am far less happy with it. The whip tubing STANK for a start! Even after I replaced the tubing, and allowed the machine to run empty for an hour (full on), there was a still a slight unpleasant chemical taste. The temperature control is very touchy, also.