In my last year of law school, I finally figured out what works for me and these are those things
I'm using this for bar prep. I used the cricut to write the name of each subject on a small box and I carry my case around with the 15 subjects' index cards
novelinks 4x6 Photo Cases & Storage Box
I use these to fill the rainbow box
100ct 3" x 5" Ruled Index Cards White - up&up™: Narrow Ruled Note Cards, Uncoated Paper, 110 Weight, Flashcards
I buy these in blue and they got me through all of law school