In my case, I'd need to convince my parents or trustee to start loaning out the money. I suppose that makes it a loan or angel arrangement over a donation. True about small businesses. My dad's mainly into apartments, commercial real estate, and housing on long term (rented) basis. Myself I work as a programmer in a small business. More to life than the BIG FOUR or whoever wants to become the fifth.
How do you feel about charitable work? Is it something that would give you satisfaction? And do you enjoy working with people? I always imagine how great it would be to have money and be able to make small loans/donations to entrepreneurs just starting out. I think I would find it equally satisfying to providing funding for small businesses as much as the next world changing startup.
Do you have some hobby you really enjoy? Maybe you could start a small business involved in that as a sort of side job, without the pressure or drive needed to launch a full time business.
Slightly off topic, but I couldn't even imagine what I would do with that amount of money. I remember when I first started making $35k-$40k here in LA, not exactly a low COL area, and I had more money than I knew what to do with.