Where is the urgency to check someones else mail account in the classroom? They can easily wait till after class and go down to the computer room in your university (and I bet you have one).

If someone do some Flash whatever as homework, then he should also care for the machines he needs to display -- or hand-in the flash via E-Mail to your professor, if he accepts.

And if somebody really really needs a notebook -- there are lots of netbooks for $200 and sometimes even below. If they can afford to have a mobile phone (which they don't need for school!) they could easily afford a netbook in exchange. Of course, one can't phone with such a netbook, but there are priorities.

To cut it short: Having no notebook is their problem, not yours. Stop trying to solve problems of other people who're not willing to solve it theirselves. If it would be a real, hard problem, they would do.

Think twice. If you request a vendor modifying his product, and it's easy enough he can do it right away -- how do you think you can ensure he won't run his product line to make more devices than you have requested?

By contract perhaps? Go and sue a chinese vendor in China, then...

First, build a prototype yourself so you know it will work. Or find someone at your location with the appropriate knowledge. Short distances speed up development. The one will then very probably be able to design a custom PCB out of the prototype. And the appropriate software (e.g. Eagle) isn't expensive.

But if you shouldn't know how to build the prototype yourself, I wonder how you know your invention will work at all...

However, good luck.