I always had that phantom feeling of a missing penis. As a kid I sometimes stuffed my pants with Kleenex when going to sleep as "there was something missing there", but did not dare to do it during the day. Did it feel like it was part of me then? Not quite. With my breasts, it's the opposite, they feel like they are "no part of me".
As an adult, I did not stuff anything anymore. Ever. Not even when transitioning, as wearing a stuffer makes me depressed, I cannot connect to it and feel it to be a part of my body. It rather remains me that there is "something missing there". Oddly, with strap-ons, it's different, no matter what odd shape, size or color I use, it feels like it's a part of me.
Since my clit has been growing to a certain size and adopted some of the male functions (only some of course), a lot has changed. It feels like it's part of my body, not quite a penis but close enough to it that I am happy with it and feel okay about it. Which is awesome as it will me save a lot of trouble for bottom surgery. So my dicklit is my packer, so to say.