To make a lot of money fast would be impossible at least doing it legal.
You can however make some quick money by selling things you don't need anymore through websites such as craigslist or ebay or have a yard sale.
You could also work as a freelancer and earn some money doing online projects for people and they'll pay you for those services.
Also since it's summer and the mowing season go around and ask people in the neighborhood if you could mow their lawn for some money.
I mow a few lawns per month and earn an extra $200.00 per month doing so.
Another option that could eventually earn you some passive income would be to start a blog on a niche that is high paying through ad networks such as Adsense or Media.net and earn money on auto pilot years down the road after building up the blog.
I've got a blog I started 3 years ago and it's earning a little bit of money on auto pilot each month through Adsense and eventually I hope to have the blog earning a full time income for me and even if it takes me into retirement for the blog to earn a full time income I'm okay with that.
It'll be a nice extra income in retirement and keeping the blog online is very cheap per month and per year.