Welcome to Gaia! ::

First of all, what's your budget? And do you know anyone that can tell you some tales of life in Japan, or as a professional fan of the culture? Who there can teach proper Japanese?

I've always wanted to start a Jp culture club myself but never got around to it! If I were you, I'd show a lot of anime/ attempt to have everyone learn and use Japanese, have cooking days and pretty much all of those other things you said! Not to mention japanese history is facinating... maybe reccommend books? heheh I'd probably have ddr matches too...
of course, I'd also just start out slow... just let it be a fun thing for people with common interests to meet then maybe try to develop a set schedule that is voted on or something
whee wish I could join heheh

Yup, I'm going to ask around, hopefully I can find some ^^ thank you for your great idea

I second the holiday suggestion. I know there's some kind of Cherry Blossom Holiday that they get off school for, and there's White Day in March; the Valentine's Day where guys return the favor by gifting girls; since it's the other way around on their Vday.

One of the things my club did back in the day was have Japanese penpals sponsored by a Japanese school. You can try writing to them in Japanese and they can practice their English to you in return. That was fun an often amusing. ^.^

I currently I am the president of a Japanese/Asian club and have lots of ideas~ The key to making a club fun is to have LOTS of hand on stuff. No one likes to sit an listen to a long lesson like class.

Trips
-Japanese restraunts (we did sukiyaki)
-Karaoke, it is extremely popular in Japan
-China Town for Chinese New Year

Crafts
-Paper mache Daruma
-Obon lanterns
-Cell phone charms, we did mice for the new year
-Kanji stone keychains, get clay that looks like stones and carve kanji into it
-Hinamatsuri dolls
-LOTS of origami

Activities
-Sports day, Japanese style tug-of-war was the most fun
-Cooking days, work with the home-ec teacher for this
-Game shows, Japanese game shows are CRAZY, try playing some of the games they do
-Trivia, have candy for prizes or just bragging rights

Videos
-Movies, but make sure they fit into your school's rules, usually you can get away with NR, which most Japanese films are
-Music Videos, this is a great way to teach about Japanese music
-Japanese Disney, school appropriate and almost everyone loves it whee
-Check youtube for informational videos that are interesting

Our club usuall runs like this, 15min of chat time with Japanese music playing in the background, then officers officially start meeting and everyone sits down and gets quiet. Then we explain the culture behind the project we are doing, ie, if you are doing daruma explain the myth. Then we turn the music back on and let everyone work on thier projects or watch the video. 3nodding

Hope that helps, if you need anything else feel free to PM me.

How about doing Tea ceremony?.... whee
it's kinda cool^^

I was going to suggest this, its fascinating!

also I've come across some great Japanese myths and legends.