This is a list of kitchen equipment that I find useful in prepping my bento lunches as fast and as efficiently as possible. This is not about bento accessories such as cute picks and sauce bottles, which are nice to have but not essential.
For information about how to select a bento box that’s right for you, see Selecting the right bento lunch box [1].
I use the small frying pans for quick frying, sautéing, and more. I use the large frying pan for boiling and steaming tasks as well as sautéing.
How many minutes do you waste waiting for a pot of water to come to a boil? An electric water kettle does this essential task in the shortest time possible. One of the first things I do when making bento in the morning is to fill up my electric kettle and switch it on. If you are in the market for one, get the largest capacity model you can find.
A grill pan is one of the best ways to quickly cook a piece of fish or meat, but it can be used for vegetables, tofu and more too. (I actually use a Le Creuset grill pan [2], which is enamel coated on the outside and uncoated on the inside.)
Use a salad spinner to wash all the leafy vegetables you get and try to get into the habit of washing them as soon as you get them home. If you can’t manage that, at least try to wash them the night before you need them.
A rice cooker is the best tool for cooking white rice. The ‘set-it-and-forget-it’ convenience of a rice cooker with a timer function just can’t be beat. Many modern rice cookers can handle brown rice as well as white rice, and can cook other kinds of whole grains as well. People even make soups and breads in a rice cooker! See Answering some rice cooker questions [3] for more.
If you are a vegan or vegetarian, or interested in introducing more whole grains and pulses (dried beans and legumes) to your diet, a pressure cooker is a must. A pressure cooker is great for brown rice, whole grains that need longer cooking (like barley), and dried beans. Dried beans are so much cheaper and better tasting than canned, and cook up in a short time in a pressure cooker. I often make a batch of beans, portion them and freeze them. See Pressure Cooker Love [4].
The rest of the items should be self-explanatory.

For packing bento boxes:
Saibashi are long, uncoated chopsticks (usually made of bamboo) meant for cooking. Often they are attached together with a string, which I just cut off. They are great for mixing things up, stir-frying, and so on, as well as for putting food in the bento box. 2 or 3 pairs (or 4 to 6 individual) saibashi held together act sort of like a whisk for rapidly stirring things, but are much easier to clean. Regular chopsticks will do fine too, though be careful not to use the lacquered kind in hot pans.
And finally, a couple of larger appliances that are nice to have:
Essential bento making equipment to me is not about cute little egg formers or colorful plastic picks. It’s about tools that make bento assembly fast and easy. Using egg formers and the like is optional, not mandatory. There are several reviews of bento boxes and accessories on this site however - see the equipment and supplies [6] category, as well as the kyaraben [7] category for decorative bento supplies and ideas.

[It’s back-to-school time! This article was originally posted in September 2008, and revised several times since. There are lots of great ideas in the comments, so be sure to check them out! ]
Here’s a great question [8] from reader Jan:
I live in a college dorm, and I only have a microwave, water kettle and George Foreman-style grill (we aren’t allowed to have hotplates in here). Is it an option to grill tofu? And do you have any other suggestions for cooking with my limited resources?
Eating healthy in a dorm room can be a challenge indeed, especially without a fully equipped kitchen. I actually lived in a dorm-like setting (it was off-campus housing but set up like a dorm) for a few months during my early days in college. We had access to an ancient refrigerator, which was compartmentalized inside into lockable litle safe-like boxes with nameplates and keys (!). Each box was about the size of a hotel room safe, so there was barely enough space there for each person to store an apple and a can of soda. We could have a water heater in our rooms, but that was about it (though there were suspiciousl smells periodically wafting about the place from various rooms). I did move to a better place as soon as I could, but here’s what I remember doing from those days, plus some ideas about using those luxury items, a grill and a microwave!
From a regular (Western) grocery store:
From a Japanese grocery store:
Do you have any suggestions for dorm dwellers? Are you one yourself - and if so, how do you cope? Is thinking about making bento lunches in a dorm too ambitious?
Links:
[1] http://justbento.com/handbook/bento-basics/selecting-right-bento-lunch-box
[2] http://astore.amazon.com/wwwmakikoitoc-20/detail/B000E3LKB6/002-7535408-3375258
[3] http://www.justhungry.com/answering-some-rice-cooker-questions
[4] http://www.justhungry.com/pressure-cooker-love
[5] http://astore.amazon.com/wwwmakikoitoc-20/detail/B00004S7V8/002-7535408-3375258
[6] http://justbento.com/taxonomy/term/7/all
[7] http://justbento.com/taxonomy/term/88/all
[8] http://justbento.com/bento-no-9-10-minute-vegan-bento-fried-tofu#comment-1922
[9] http://www.amazon.com/exec/obidos/ASIN/B0007M2BMQ/ref=nosim/wwwmakikoitoc-20
[10] http://www.amazon.com/exec/obidos/ASIN/B00008UA3K/ref=nosim/wwwmakikoitoc-20
[11] http://www.justhungry.com/instant-ramen-and-cup-noodles-are-very-very-bad-you
[12] http://www.amazon.com/exec/obidos/ASIN/B0002IZD1Q/ref=nosim/wwwmakikoitoc-20
[13] http://justbento.com/bento-item-week-microwaveable-no-refrigeration-needed-rice
[14] http://www.amazon.com/exec/obidos/ASIN/B000643THQ/ref=nosim/wwwmakikoitoc-20
[15] http://justbento.com/handbook/johbisai/homemade-furikake-no-6-gomashio-sesame-salt