Would you use the proven and classic technique of equivoque (aka. magician's choice) more often if you could simply read your pre-printed script as an integral part of your performance, show the script to your participants, and ultimately give them a copy so they could even try it again later?
With an official looking and intriguingly customizable 1940's Compatibility Quiz from the popular Life Magazine, all of the above works just as stated. By carrying the script on your smartphone, you'll be ready to perform this classic piece of mentalism with any six objects anytime and anywhere.
Finally considering the fact that your equivoque script has been pre-printed, this mentalism tool becomes bullet-proof as the very suspicion that you're changing the rules as you go along has been successfully eliminated once and for all.
1st edition 2019, length 16 min + PDF + Word DOCX