Cashcrate.com is an excellent way to make money. You complete offers and take surveys and get payed for it. I read an article on it from a guy that has doing it for sometime now and he explained it as voluntarily signing up for spam and gave a whole layout of the best way to do it. and you can actually make decent money. Pretty much make a separate email for spam.
Hunt for under-priced used books that you can sell online. Download an app that reads ISBN numbers so you can scan the barcodes on books. This will pull up the book’s current price on Amazon so you can see if it’s worth trying to resell it. Then, visit used book stores, thrift stores, and garage sales to look for high value books. Post the books for sale online using sites like Amazon or Ebay.