I have the most overwrought instant film setup. I love it.
I have a Instax back from Nons, permanently attached to my Hasselblad 500C with 100mm lens
Nons also makes other devices like the SLR you can add a Nikon or Pentax lens to
https://nonscamera.com/products/nons-instant-back
https://nonscamera.com/products/nons-sl645
There is a huge instant film community in San Francisco and it’s always fun to attend even if you don’t have an instant film camera. You can see the fun instant cameras people have, very impressive