For writing practice I wanted to be able to print a list of WK kanjis per level, I’m sure that’s doable with existing extensions but I couldn’t be bothered to figure that out.
I generated two vesions, one with and one without serif (I also converted the onyomi to katakana):
I use it to practice remembering the kanji from the reading/meaning instead of the other way around since that’s what WK uses mostly.
I know that there already are 3rd party website who do specifically this but I find that it really helps me to actually draw the kanji to remember them, so having it all on paper is convenient for this, tree murdering notwithstanding.