Refinish old furniture from thrift stores, yard sales, or online ads. Sand down the furniture to smooth out the surfaces and buff off some of the old paint or stain. If you want to restain it, use a lacquer or paint thinner to remove the stain. Then, re-stain the piece. If you plan to repaint it, apply a primer and let it dry. Next, apply at least 2 coats of paint, letting each coat dry for at least 24 hours. If necessary, add new hardware to finish the piece.
File-Sharing: Web sites that host directories of music, movies, games and other software. Users upload content to file-hosting sites and then post descriptions of the material and their download links on directory sites. Uploaders are paid by the file-hosting sites based on the number of times their files are downloaded. The file-hosting sites sell premium download access to the files to the general public. The websites that host the directory services sell advertising and do not host the files themselves.
Education occurs most often in "real life" by becoming involved and learning the details as time progresses. Although there are several books on the topic, some so-called "how-to" or "silver bullet" books instruct readers to manipulate holes in the Google algorithm, which can quickly become out of date, or suggest strategies no longer endorsed or permitted by advertisers.
House sit if you have neighbors who go on vacation. Water their plants, take out the trash, check the mail, and keep an eye on things. They may ask you to visit 1 to 2 times a day or even spend the night at their house so it doesn’t look empty and prevents burglary. Follow all of your neighbor’s rules and instructions and always lock up the house when you leave to keep it safe.
In my experience, it’s product-related blogs that tend to do best with Amazon. Most blogs probably have at least some possibilities (for example here on ProBlogger I occasionally link to a book that relates or a computer or electronic tool that I think might be useful to bloggers) but the reality is that this blog will never convert as well on Amazon as my photography site.
If you have a propensity for writing and you can slay with your prose, consider writing an ebook. While the market has certainly become saturated as of late, books that help teach people about a technical topic still sell extremely well. This is a great source of passive income but does require a large amount of effort at the outset before any money is generated.