favorite mnemonics?

so my orgo final is rapidly approaching and i am still completely unprepared. it's back-to-back with my physics exam, so i've also been reviewing for that, but i have a better chance of actually passing the class than i do in orgo. no matter how much time i put in, i just can't really seem to comprehend some of the concepts--i have aphantasia so i can't visualize things, which makes... pretty much everything a little more difficult. i was wondering if any of you had some go-to memory tricks that might help me keep at least a few things straight! (even really simple ones like "the rich get richer" for markovnikov's rule or "R for right" for configuration)