Anyone got a solution for this minor problem?

[CurlewKate]

I have arthritis in my shoulders and sometimes I cannot reach any lower on my head than the very top. I want to be able to tie my long hair up in a tight low pony tail on the nape of my neck. Is there a gadget, hair tie or technique that might help?

There are some videos on Youtube with suggestions, worth watching.

Is it easier if you take gravity out of the equation? I had a spell with the opposite problem - couldn't hold my arms up long enough to do much with my hair. My workaround was to do it lying down with my head at/off the end of the bed.