Alternatives to the Hitachi Magic Wand

[Like Ra]

I do not mean inducing any damage, but stretching it close to the maximum to make "clenching" as difficult as possible.

Yes, I am looking for something that no matter how much I squirm around, it should stay put.
Tried an idea the other day. With six strips of tape, I taped a small vibrator to the end of the penis. While in bondage, this guy just went buzzing its merry way, and I was enjoying it till the batteries went out.
But, it gave me an idea.
But, it's time for coffee and some thinking.

Ancient post.... but these types of belts work well with normal Hitachi/Euro type wands and you can adjust the position:
https://www.amazon.de/-/en/dp/B0BZY1GRYD/

I don't care for usb charged/battery wands, too weak, buzzy like a bee instead of deep & rumbly.. and inevitably always run out of power when you don't want them to 

I have two Euro wands, strong & mains driven ... Only down side, the capacitors sometimes die & need to be replaced (very cheap but you have to de-solder/solder) or you can buy a replacement PCBA (be really careful with the flex cable and do not stress it, it is very delicate if bent too far & will snap, experience...): 
https://europemagicwand.com/product-cate...are-parts/

Those newer pistol massagers look interesting and powerful... and cost less than Hitachi/Euro wands. If one of mine dies beyond repair, I may try one of those. Otherwise, I have not found an alternative... yet...