I would suggest based on your level you can start reading NHK Web Easy and look up any words you don’t know. I do this alongside the web extension rikaigu to look up words I don’t know/can’t work out on my own.
Some other things I use are:-
Highlighting plugin
Hiding context sentences
Wanikani Context Senteces added to reviews
You can practice your hand-writing through your grammar studies or for writing in general Hello Talk is good as native speakers can advise you. I hand write sentences to drill in new particles using words I have learnt on WK - particularly for conjugating verbs.
Also there are quite a few threads on this topic already which you should read:-
https://community.wanikani.com/t/Where-to-start-reading-and-where-to-get-more-practice/15861
https://community.wanikani.com/t/Where-do-you-practice-your-reading/13288/2
https://community.wanikani.com/t/Reading-Materials-based-on-WK-Level/2448/8