There are so many gizmos that you can attach to music stands or floor standing mike and tablet stands, already discussed as above, so I'm not going to add to that.
However, I used to play church organ, and one thing that really drives me nuts about non organ music rests is that they are always too short, and not high enough. You see, organ scores are generally produced in Landscape format, so you need a longer rest.
An average music book on A4, office, format paper is approx 17" when open. An average Organ score is 23"....a big difference.
I still have some "Extravorganza" series books here at home, and they are too long for the average arranger keyboard.music rest.
So here's an idea for you. Cut yourself a 30" x 12" piece of thin plywood. 3ply is adequate.
Place it on the music stand. There's no need to attach it, unless you wish to.
Now, clip or velcro a small but nice Ecclesiastical curtain to the top rear of the plywood to hide the music stand completely
Job done. Simple, cheap to do. Problem solved.
You now also have a longer area to place your music on. Useful as any organist will tell you.
Might help, might not, but all anyone will see, is you playing, whilst admiring your ingenuity! 😂
I learned over my lifetime that often the simplest solutions work the best. Spending money is easy.... Thriftiness is just common sense.
Keith.
