The movie "The Empty Man" is about a Tulpa.. It's one of my favorite movies of all time. I've seen it probably 30 times and I'm still noticing new things when I watch it.
Via Facebook groups like the original DC9 and ANCAPISTAN, I wound up following accounts by Zylphia Sepiida and Alison Aries, both of whom claimed to have tulpas. Truly wild characters.
https://www.imdb.com/title/tt5867314/