I have this one. Works really well. I have a firefly for portability but this one can't be beat. Takes about 5 minutes to heat up all the way. It frequently comes and goes off Amazon though. I bought it for about $30, and it seems a lot more expensive now.

I also purchased a custom vape whip (no hands version) and it makes a pretty sick combo. Red tubing and blue custom glass pieces.

Aromafuser Aromatherapy Diffuser https://www.amazon.com/dp/B00AQ7MYVK/ref=cm_sw_r_awd_R1yOub1RTMBJF

The first one I found just by searching. I would never buy that vape lol too cheap.

Their are some out there though just do some digging. Again, you're better off not ordering from Amazon.

I saw one this morning listed as a "Aromafuser Aromatherapy Diffuser".

Edit:now with more LINKY!