Q. I know I am not supposed to knit or crochet during the three weeks but I am very fidgety and it helps me sit and concentrate. Could I do something else that doesn’t involve clothes such as wrapping a hanger, whether or not for personal use or for donating to a charitable cause?

Can one with those issues play with dominoes game on Shabbat?

A. One may indeed do work such as wrapping a hanger during the three weeks for any needed reason.
In principle Poskim permit playing dominoes on Shabbos as they permit playing chess when it is not done for money and one is careful with the forbidden Shabbos Melacha of Borer or choosing from mixed units and is not keeping a written score.

However, Poskim also encourage to dedicate Shabbos for Torah learning, performing mitzvos and resting if needed.
(See ‘39 Melochos’ p.978.)

Rabbi A. Bartfeld as revised by Horav Shlomo Miller, Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a