I fiddle around with them during long work calls

I believe the Rook and the Bishop are the shogi tiles Netero gives Gon and Killua to test against "assassins" to enter the NGL. Idk if that has much deeper significance or those are just the two tiles on the top of Togashi's mind

Calling your reps is only the 1st step. This excellent old Amnesty International advocacy video gives very practical next steps for turning that call into a relationship. It also offers great tips on how to keep the pressure up until you get what you want. This should be mandatory for civics class.