Some years ago my daughter gave me a tiny tape recorder with a voice activated control (vox). I slip this in a shirt pocket or equivalent and talk out loud throughout a shoot. One might think this would elicit some strange looks, but it usually goes unnoticed. When in the privacy of the “office”(?), I record succinct information in bound journals like Alex above. I have capitulated to modern technology in the use of the Mate’s ink-jet printer to put proper information on the back of 8x10 proof prints.
I have found the above procedure(s) very helpful and it offers hands-free operations when it is necessary.