Probably the most creative thing I’ve ever done was wrote a review on a restaurant (The Heart Attack Grill) that was hilarious, emailed it to the owner. He loved it so much he posted it on FB and even put it on his homepage for a while. I got thousands of visitors from this stupid article: https://www.insuranceblogbychris.com/buy-life-insurance-before-eating-at-heart-attack-grill/
A search engine considers the content of the sites to determine the QUALITY of a link. When inbound links to your site come from other sites, and those sites have content related to your site, these inbound links are considered more relevant to your site. If inbound links are found on sites with unrelated content, they are considered less relevant. The higher the relevance of inbound links, the greater their quality.