I'm not tidy or organised, but I realised after a conversation at work a while back I'm the only one amongst my workmates who does this, which I'm pretty sure helps to keep my weekly washing down (although obviously not to OP's levels).
Mumsnet, I give you the ONE-a-towel-week-rule:
everyone is allocated one bathsheet a week, and only over my dead body will anyone get more than one a week! If they choose to leave it on their bedroom floor and it goes musty, so be it. Towel change day is either Saturday or Sunday (weather dependent).
i think it took everyone one week to realise that it was their best interests to hang their towel up each day to air, rather than leave it on the floor in the bedroom.
When I introduced this regime change it was a game-changer, I can tell you!
Re the OP - you sound like the person I strive to be, but never quite make it.
However, when your DCs are older, wear adult sized clothes and have weekend jobs, and a gym habit, the number of washes per week will likely increase.
You've inspired me this morning OP. There's an organised woman somewhere inside me, I just know there is!