First, I've to say this is not a very comprehensive guide because you can find bento stuff at lots of places in Tokyo, so it's quite impossible for me to list down all the places. I'm only listing down links for the major shops, or shops I happened to come across during my trip. I hope the list will be helpful if you are clueless about where to shop for bento stuff there.
A word of caution, this is going to be a photo intensive and long post, lol. :P
I think most people are very familiar with Tokyu Hands. They have a few branches, the one I'm showing is at Shinjuku. No time to visit the others, because I've to try to fit in bento shopping with my sight-seeing itinerary, so the shop has to be nearby the sights I'm going for that day.
I took some photos so you have an idea of what they carry there. :)
More bento tools.......:)
Thermal lunch sets. :)
The ones on the right are natural colourings.
Pretty thermal jars.
On to the next store, Loft.
This is the store at Yokohama. We were in that area to visit the Cup Noodles Museum.
Pretty similar stuff to Tokyu Hands, but they have some different stuff too.
Boxes and tools. :)
The next shops to look for are 100 yen stores. There's Daiso, Can Do, Seria, Tokutokuya and Watts. I did not get to visit Daiso though due to lack of time.
This is Can-Do at Mitaka.
This was all they have at that branch, don't bother going down there, lol. I went because we visited Ghibli Museum and was in the area.
This is the branch at Shinjuku.
Much better, lol. :)
This is Tokutokuya at Asakusa.
Nothing much there, we had no time to visit other branches.
There's some stuff at the supermarket on the first floor.
Another 100 yen I went to is Seria.
This branch is at Mitaka.
This is another Siera branch, at Asakusa.
The last 100 yen I went to was Watts.
This is the branch in Shinjuku.
Baking stuff that you can use for making bentos too.
This is Natural Kitchen. They do not have much bento stuff, but they have very nice and cheap zakka kitchen and crafts stuff. I visited the one at Mitaka and Ikspiari. I did not take any photos of the interior since there were hardly any bento items.
More bento stuff I saw at various departmental stores.
Bento stuff I saw at Takashimaya Shinjuku.
And more stuff......
Cute bowls. :)
Toys "R" Us at Odaiba.
Bento stuff found there.
Hello Kitty shop at Diver City.
So sweet. :)
Rilakkuma store at Tokyo SkyTree.
Picks and sauce containers.
Tomica Shop, also at Tokyo SkyTree.
What they carry. :)
This shop at Tokyo SkyTree carries TV characters merchandise.
Cute version of Naruto.
I don't know what cartoon is this. :P
Er, masked rider?
Lol, yeah, I know it's a long post and tiring to read, I'm tired from doing it up too. Lol, it's going to end soon, hold on. :) Last stop, Tokyo Disneyland.
They have very kawaii bento stuff there!
But prices are more costly.
Not bento stuff, but so cute I thought I'll share too. Minnie pot holders and Mr and Mrs Potato Head salt and pepper shakers.
Love the wooden Pooh spoons and forks.
The chopstick rest are so cute too.
I love all the Minnie Mouse stuff they have! :)
Just a little more information before I end the post. If you looking for characters stuff, try Character street, they have a lot of characters store clustered there. If you are looking for traditional or restaurant type of bentos, try Kappabashi (also known as Kitchen Town). They also carry lots of metal cutters.
That's all, thanks for reading and I hope the information is useful. :)