Butane may well be an option, was just thinking about keeping it going out and about. Can bung a can of gas in the wagon...
Get a Vapcap and a world of heating options become available to you. Butane lighters are cheap and small ones will pair nicely with it. Single jet lighters will take about 15 seconds to heat the cap, a quad 5 seconds or less and the double and triple somewhere inbetween. You heat The Vapcap for a few seconds, stop heating then toke. From loading the Vapcap, through a few heating cycles, toking and dumping your load takes all of a minute. It's a wonderful efficient device.
Other heating options are bic lighters (wind sensitive and your fingers will get hot), candle ( great for lounging at home), stove element (for when you've lost your lighter), campfire stick (for the nature experience), solar heaters (for true off grid, no access to society and butane stores), Induction Heater (for the ultimate home or out and about option). The Vapcap will outlive any old fashioned battery operated vaporizer and will rid you from the drudgery of being tethered to an outlet for charging batteries, replacing batteries, managing batteries and juggling and untangling cords.
I would like to be able to vape thumb/scissor hash from cropping, also dust from the botom of storage jars, screened kif and oily residues from the iq.
Vapcaps are fantastic vaporizers for dry bud, hash, kief and concentrates like rosin, wax and shatter.
I love to use my Vapcap for a daytime sativa concentrate for an out and about all day sipper.
http://fuckcombustion.com/threads/best-of-dynavap-vapcap.24345/#post-1145395
Dynavap offers several models to choose from, from the all stainless steel M to the intermediate titainium tipped models to the top of the line titanium Omnivap with tightly milled precision and dialed in airflow control. They range in price from $60 to $215.
Vapcaps have a modular build that allows you to mix and match the components for a uniquely yours vaporizer. A stoners LEGO paradise. VonG midsections mate with 14mms water pieces.
https://www.dynavap.com
Check out the Vapcap thread....
http://fuckcombustion.com/threads/dynavap-vapcap.18853/page-1314#post-1267003