As a non-native Japanese speaker, and now I am not living in Japan, it is a must for me to practice my Japanese regularly in order to keep it up. Below are my ways for the practice of my Japanese language and I hope those can be helpful to you.
Watching ちびまる子ちゃん YouTube videos
An anime about a daily life of ちびまる子ちゃん. I love this cartoon, as their speaking speed is not that fast, and the conversations from the characters are easily to be applied in a daily setting. Besides, I think you may understand more of ordinary Japanese’s way of life by watching this program, instead of watching some animes which somehow are out of touch with the real world.
Chatting with native Japanese on the internet
Well, although you may keep up with your listening skills by watching anime, or movies, you have to speak with Japanese people regularly so as to maintain your speaking skills. For some countries where are not lived by so many Japanese, it is a good idea to have a chat with Japanese by Skype from time to time in an affordable way. Japatalk offers a 30 mins one-to-one conversational lesson, with the cost around 390 yen.
Of course, you are proficient at speaking that doesn’t mean you are better at reading, especially that the written language is sort of different from the spoken one. My Navi no Madoguchi publishes tons of articles about university life of ordinary Japanese students, and those articles are not written with some difficult Kanji which won’t take you so much time to digest a whole piece of essay. Moreover, you can understand Japanese university students’ way of life by reading this, which may be helpful for you to make friends with Japanese when you come to Japan for study or travelling or work.
Recently, we also have made a youtube channel which is also called Yabaipost. Go there and watch some clips and subscribe our channel if you like our work!