Hi ya mantra
I like the "film director" type wooden fold up chair. Cheap, portable, strong and it is possible to work through the canvas back if necessary. I brought one in Tesco's several years ago half price at ยฃ7.50!
As for FHT and Embody, they both have pros and cons. I'm a member of CThA/Embody by default, as I was a member of the Guild of Complementary Practitioners (GCP) which was then sold to ITEC Professionals, and now called CThA and BThA using Embody as a brand name.
One thing that FHT is better at than CThA/Embody is their magazine. Embody's is rubbish. For me as a teacher/practitioner I prefer Embody's insurance policy.
Ask both organisations to send a info pack and see what benefits you.
Best Wishes
Reiki Pixie