My first time out en femme was in the Capital Hill area of Seattle - mostly to the drag clubs in the evening. However, while out in drab during the day I noticed that every establishment had some sort of safe space signage. While I've seen those signs before, this was the the first time I had experienced the comfort that such signs can bring to a person by letting me know that I was not going to be judged while in this establishment. The fact that I was not en femme at the moment didn't matter...it was a feeling that I was welcome to be whoever I wanted and dress anyway I wanted and these folks would be okay either way. I had never felt so welcome in my entire life.
So, on my trip back home I decided that I needed to get a safe space sign for my office. I have a lot of visitors and who knows what they are up to in their personal lives. And, while I don't expect it to prompt any discussions, I do expect it will provide some quiet comfort to at least some of my visitors. In addition, it might signal to others (not in the LGBT community), that it is okay maybe even noble to be an ally of this group. I had thought that such a sign might out me with co-workers, but for God's sakes it's 2017 and showing such support is quite common in mainstream society. If any coworker asks about it I'll just say it's the right thing to do - I'm known for being being a bleeding heart liberal around the office so I don't expect anyone will even bat an eye. If it would seem out of your character, I'm sure you could come up with some story about a niece or cousin came out to the family and you are just trying to show support for a loved one.
I work at a fairly large organization with a stated policy toward tolerance, so I decided I should get an officially sanctioned sign. To my surprise, I was told that they would not give me one of these signs until I went through a one hour training course on tolerance, and the next course would not be for a few months. The course was actually quite informative and I learned a lot. It actually included a packet with lots of definitions and terminology that I was not aware of (although I did already know quite a bit of that information beforehand, given who I am). They did have some incorrect information about crossdressers, but that part of the story I'll leave for another time.
So, I finally got a safe space sign for my office and every time I see it I feel even better than I did in Seattle, cuz now I am the one providing comfort to others.
I strongly encourage everyone to look into getting a similar sign for their personal workspace - it's really a small gesture that can go a very long way for individuals as well as society in general.