I'm always looking for ways to shave a few minutes off bento prep time. One way to do this is to look at the containers the condiments, sauces and other ingredients that you use frequently come in.
I use honey quite a lot as a sweetener. Measuring it out of a glass jar is a sticky, messy business, that more often than not requires washing of a spoon, wiping drips around the lid and jar, and other little things that add up in terms of wasted time. So, for morning preperations I rely on the neat runny honey in a squeeze bottle. It's not rare gourmet honey gathered from bees who suckle on rare alpine flora (I save that kind for leisurely cups of lemon-honey-water), but it sure cuts down on bento making time in the morning.