I carry a rolled up 1m paper tape from IKEA as well as miniature plastic vernier caliper in my purse! They are super handy and lightweight, highly recommended.

o hey thas me 🙋‍♀️

This is the obvious answer to me. And door “one” just isn’t pictured.

I’m guessing just rooms 1 (not pictured), 2, and 3, purely for administrative purposes, because as gendering options this doesn’t make sense.