Okay, I have to do a quick post since I am at work.
I have mentioned before that I love the idea of people customizing their experience with the electronics they use each day. I have seen anime and other creative stories that have interesting UIs in cell phones and the like.
My idea is to have a company that makes consumer electronics such as cell phones. The primary goal is to add software to these devices that allows the user to personalize their experience.
You could say that Android systems allow this, but customization for each person does not seem to be an easy task from the little research I've done. Feel free to chime in in the comments if you know otherwise.
For this company, their software would allow users to personalize their device easily and quickly, perhaps even on the fly. One obvious example is font for various phone functions. The user could design their own font for use throughout the phone. Other possibilities for customization include background, animations, and so on.
This came up after I was thinking how cool it would be to use some of the LED displays I had obtained in watches, and then I thought "Well it would be easier to just do it with a single matrix-type display using software.