I have to bring a notebook to college everyday. The desk we

Older Lenovo's have a little red clit, there's also touch screens.

If you're desperate you could get a graphics tablet and just use it on your lap? Bit of a pricey solution if you have no other use for the tab though.

just buy a couch mouse and use it on your leg

not perfect but still a million times better than touch pad

You're not going to get a solution as simple and effective as just using the damn touchpad.

Trackball, maybe? I've used them for years. They do take up some space, but not nearly as much as a mouse.

Don't even think of using it for drawing, though.

MacBook Pro trackpad. Or a wireless trackball mouse