An interesting thing I did to help students to learn the days of the week was a song. The song is "Friday I'm in love" by The Cure. Everybody loved that song and were happy to be able to sing it. I just printed the lyrics for them and we listened it from youTube. Not only they've learned the days, but they still remember them after three weeks, without any practice.
http:///www.youtube.com/watch?v=k5eKciJisnI