I was reading the Sounds of Star Wars, which is a great book if you love the movies and have an interest in audio! It's interesting that Ben Burtt often 'real worldized' sounds be playing them through a speaker in some room, hall, bathroom, etc, then recording the sound, to get the most realistic sounds possible.
I've done this with sounds on occasion, to get the right 'room' sound on something that was tracked previously, and didn't match the other tracks. Vocals, in particular, which I was trying to blend with live vocals, recorded at a live concert. We overdubbed some vocals, but in the quiet sections of the song, the room vocals from the show didn't match the newly tracked ones. But muting the room mics made the overdub too obvious. So, I played the vocals through the control room monitors, and recorded them on a mic in the room with us. Blended that in, and it worked perfectly.
Do you ever set up your live room as a reverb, with a speaker and mic(s)?
What about using amp sims ITB to 'reamp' things into a reverb plug?
Share your thoughts, I find that sounds 'real worldized' this way have a dimension and depth that I can't get from a reverb plug.