I made PDF sets of all of the kanji and vocabulary and had them posted here for a year or so, but I took them down when I took my webhost down.
The links in my thread don’t work anymore, but there is LaTeX code for making cards.
I like physical flashcards. At this very second, I am making paper cards with the names of Sumo wrestlers, so that I can practice reading the names each day that I watch 大相撲.
Welcome to Wanikani!
(they never said anything about copyright infringement, but I did notice that some of the people who were interested in the cards weren’t even paying members, and that did make me uncomfortable)