A small wooden stick is inserted into a universal holder that sits in a wrist bandage, see associated tip. The stick has a rubber tip and is used for purposes such as entering phone numbers, typing on the computer, etc.
The user can insert the stick into the universal holder without assistance. He holds the stick between his fingers, moves the other hand with the universal strap toward the stick and presses the stick against a surface such as the armrest of the wheelchair.
This tip is from 2007