You can make some "hash" with the duff if you have some time and basic materials lying around..
Just half way fill a mason jar with duff. Put it in the freezer for 30 minutes to seperate the remaining goodstuff.
Then pour in 70-90% alcohol till it is enough to submerge the material. Let shake for 30 secs, let stand for 30 secs.
Hold a pasta-sifter over a pyrex baking pan, pour the duff-sludge through the sifter into the pan (sorting out the duff and passing the greenish/brownish liquid.)
Take your pyrex and put it near a little fan or something that will cause it to constantly ripple and move slightly (this will speed up evap)
Then about 8-10hrs later after everything is dry, scrape up what is left and make a little cake inside a piece of clingwrap or a small baggy or something.
Put the lil cake in your shoe or sock and walk around for a few miles with it. The heat and pressure will add the final touches.
It's not going to be great, but from personal experience, I can definitely say it will be an improvement on smoking straight duff. fuckcombustion.com has a lot of good tricks, tips, and tools for the inclined vape user.