Your next alternative process is going to be a double exposure inside of your 35mm camera. Your images will be based on a combination of two topics. You can use a topic from through 2 lenes, love / fear or anything else that you may think of. The process is going to be a little different then shooting a typical roll of film. Follow the instructions below.
1. Shoot your first topic (underexpose your film)
2. Rewind your film.... Be sure to stop when you hear the tension break (DO NOT ROLL FILM INTO CANISTER)
3. Reload the same film
4. Shoot your second topic (underexpose your film)
5. Rewind your film completely
Take a look at the slides below and the artist statement by Jessica Hosman.
At the start, the project was a way for me to visually disconnect myself from my surroundings. The process is simple: shoot an entire roll of film of a specific subject, then rewind it back into the canister and begin shooting the roll again, this time with a different subject matter. So, for example, I might go outside and shoot a roll of nature shots, then rewind the canister, put it back in the camera, and shoot a roll of studio self-portraits on top of it. This creates multiple-exposure images inside the camera, which may or may not line up with each other, depending on how the film loads the second time around. Sometimes days, weeks, or months go by between shooting each layer of images. All of these factors create images that may seem completely random, but in fact, have a lot to do with process, organization, and the choices made after the film is developed.