I use a window AC filter to cover my dish. It seems to keep it clean. I've read about people using a bandana, I have considered covering it with my silk screen I use for dry sieving hash. But the AC filter works well, and obviously I avoid getting any loose dirt or dust in the air above it. If you have the dehumidifier around I gotta suggest trying it. The warm air gives just the tiniest bit of heat to help the evap without destroying all the terpenes, and the moving air speeds the evap I believe as well. I usually rotate the dish once durring the process when 98% of the liquid is gone already.
I got a sticky pen wax burner a few weeks back. Its cool, I like being able to use it out in public without anyone really even giving me a second look. I was walking into the grocery store the other day hitting it
. I have been vapeing that delicious shatter in her, I find I can make a little worm or stick with the shatter, and just set it in the chamber. If it gets stuck, just push it down alittle and your good to go again.