Hirsty,
If you look very carefully in the back part I installed some clips to hold thermos or if you like small flask.
Since picture I also drilling in a reading glass holder since I constantly move about!
More adjustments coming!
You know if some bring young soul wants to make money,,,,there is a need for such a tool. I know when I was at hospital several persons asked me to make them such a unit!!!!
One useful attachement is a small light!
Then why not pencil clips!