Great ideas although I find writing 20 articles in a day too exhausting. Similarly, I doubt if you can collect aluminum cans in one a day that you can sell for at least $100, unless you will do it with other friends and colleagues. This is a good idea for a fundraiser, though. On the other hand, I would recommend baby/dog sitting or house/yard cleaning.
In your parent's day, the only way to make a living drawing comics was to get your comics into the newspaper or work for DC and Marvel. Today, you can draw comics about anything you want and start your own site to host them with a little money borrowed from mom and dad. Selling t-shirts and space for advertisers is a great way to earn a little money with your own comic.