It’s been long enough ago that I have forgotten who had a book or some TV special about memory tricks. What I do recall is that the gimmick had to do with a list of key images that served as “home base” for remembering other things. Somehow you were to associate some physical object (or objects) with numbers and then using those “presets” you could associate the item to be remembered with your “home base” numbers, in as exaggerated a manner as possible, so as to make the association really easier to visualize. You could then play back the list in any order required by way of the numbers.
Even if that’s not clear to you, please indulge in this little exercise by coming up with some objects that you can easily associate with the number 1 through 20. Don’t look at other posts until you’ve done yours.
A simple example of what I’m asking for would be using Hand for 5. That or a baseball glove or just a regular glove or maybe even a foot.
Try to have the objects be as quickly associated with the number as you can and try to select objects that only relate to that one number. For instance having Table as a key for 4 (because of the legs) might get fuzzy if you thought of a Table with fewer or greater number of legs.
I hope that’s clear enough.