Joining the true wireless HD800S gang, need mounting advice

I finally caved to my intrusive thoughts and got a pair of ifi GoPods to make my Senn HD800S true wirlesss. I'm using a bit of double sided tape to keep them fastened at the moment, it could be improved but I'm worried about glueing a magnet to the case because of potential sound / driver interference. Velcro is kinda a non-option because of my hair and the charging case requiring contact with the GoPods on the back to charge them.