Planning to go to Tokyo! Any recommendations on where to go and stuff to do?

check out a few shrines, there's a big one right next to harajuku train stop. I can give you the email of a private tour guide if you want...charge was about 16,000 yen for 6 hours

Tsukiji fish market, Shibuya, Ginza, Odaiba.

Meiji shrine in harajuku, Takeshita street, asakusa shrine, day trip to hakone, yoyogi park, shinjuku golden gai, sky tree, Sanrio puroland, a lot of other stuff aside from shrines just depends on your interests say if you're into anime you might wanna visit the gundam cafe in akihabara or if you wanna do more cultural things like watch kabuki you'd go to something like kabukiza theatre in chuo.

Yay! I love this question!! I've been to Tokyo the past two years and it's amazing!
For shopping: Shimokitazawa (like a grown up or more tame version of Harajuku, there's a TON of thrift stores here, not to mention it has Robson Fries which is the only poutine restaurant in Tokyo ;D), Kichijoji (traditional neighbourhood, lots of cheap thrift stores), and of course Harajuku/Takeshita street (on Omotesando street check out the thrift store Kinji, it's very cheap but kind of hidden away)
For night time: Definitely check out Golden Gai (if you bargin with the owner they'll usually drop the table charge. Finding a bar without a table charge takes a bit of searching and they'll generally be quite full anyways), Piss Alley is also an option (but I don't recommend it since it's so touristy), Kabukicho in Shinjuku is a great entertainment district. Harajuku at night is full of a lot more unique styles, defnitely check it out one night! If you're looking for clubs/bars check out Deca Bar (very unusual club with free entry in Kabukicho), and Ruby Room (free entry, in Shibuya).
Touristy things: Meiji Shrine, Shibuya Crossing, Asakasa shrine, Ghibli museum, and Tokyo Sky Tree. If you're looking to go up the Sky Tree, save yourself the forty dollars and go up the Shinjuku Metropolitan Government Building instead. The observation deck is literally two feet short than the Sky Tree's and it's absolutely free!
Unique things to check out: On every second Sunday (I think, might want to check the schedule to be sure) in Yoyogi Park there are grease dancers, Nakano Broadway (which I recommend in general, not just for this shop) has a cheap ice cream shop where the extra large cone has a variety of unique flavours and is over a foot tall, the Aoyoma Flower Tea House is a beautiful cafe in the back of a flower shop, the Kit Kat Chocolatory (in the Ikebukuro SEIBU department store on... B2? It's super expensive but if you love Kit Kats you'll love it there. That whole floor is full of really pretty sweets, most are reasonably priced too!!), cat cafes (or bunny, owl, reptile, goat, etc), maid cafes, tons of themed restaurants, visit the hotel where Lost in Translation was filmed (extremely pricy!! Two people, one flute of champagne, and a glass of water cost about $75!!), collect 35 Rilakkuma stickers from blue Lawson's convenience store and get a free bowl (it's a fun goal to set!), and of course karaoke!!
Day trips: Hakone (has black onsen eggs, and is known for it's hot springs), Mount Fuji (way too packed for me, I was good with the view from where I was), if you're into some off road hiking go to Aoigahara (also know as the suicide forest), Yokohama's interesting (the China Town's very cool. Korean Town is Shin Okubo in Shinjuku if you're wondering).
Otaku/Sanrio things: Akihabara (lots of anime and maid cafes as well as the Hello Project store), Johnny's store is in the purikura city half way down Takeshita street, Kiddy Land in Omotesando (I love it there
), there's the Gundam cafe like mentioned above, and if you're interested the AKB cafe too, there's a variety of temporary cafes around Tokyo (I find a lot of them are either in Harajuku or the Shibuya Parco department store).
Cheap food (they're open 24h, meals for around ¥400 give or take 200): Hanamaru (shop with orange with white lettering, or white with black lettering and an orange flower), Sukiya (red with yellow and black lettering), and convenience stores!
Definitely check out the website Tokyo Cheapo! It has places to eat, see, and shop for really cheap. Everything's sorted by district so it should be super easy to find less expensive things to do in Tokyo!
Again, what you want to do really depends on your likes and dislikes, and how much time you have. I tried to add a variety of things, hope this helps!!

I've posted this in the other recent threads about Tokyo, but here's my blog post about Tokyo (and other places in Japan). http://melissadreamsofsushi.com/?p=8629

http://luckypeach.com/the-five-ramen-shops-you-can-and.../
LUCKYPEACH.COM
The 5 Ramen Shops You Should Visit in Tokyo

Tokyo Tower, Shibuya, Shinjuku, Roppongi, Ginza a day trip to Gotemba for excellent views of Mount Fuji and premier outlet for shopping.

Thanks everyone! Much appreciate the help

Shibuya and Ginza are my favourites places. You can also check out Tokyo tower. For a night of partying ....not too far in Yokohama have great night life

Cindy Luong

Judy Bouktsis

If you get a chance go see a Sumo wrestling tournament, it was an amazing experience!

If you're a sports fan, you may want to watch a baseball game in Tokyo.

Try a maid cafe at some point in Japan!

each day i went to a different district, ginza, shibuya, shinjuku , harajuku, etc.
for nature i took a train to hakone , amazing onsen (hot springs)