http://www.asahi.com/ – This is an useful Asahi news paper website for choosing topic especially for advanced conversation class.
http://www.nikkei.com/news/special/matome/ – Another online news paper website that can be used to look for topics, update yourself, and introduce students’ what is going on in Japan.
https://usatasuku.wordpress.com/ – One of the former Japanese LR’s personal website. You can find general ideas RE classes and cultural activities. Use human resource!
http://cookpad.com/ – If you’re looking for nice Japanese cuisine recipe you can make with your students, yes, cookpad.