Ha ha. I've done this on more occasions than I'd care to admit
I've used a piece of super-fine mesh screen that I used to use to build wicks out of several years ago when I used to use rebuildable nicotine vaporizers. I cut off a small strip of it and rolled it to fit perfectly inside the Dynavap tip. Put it in the tip, smash a bit of concentrate down on it, put on my cap and heat (leaning the vaporizer back, toward the mouthpiece, when heating so that the oil melts down into the screen). It's worked very well in the two or three times I've used it that way. I even unlolled the plug after I was done, and it was almost perfectly clean. Everything vaporized.
Here's a shitty pic of what I'm talking about: