Ask your web design company to link to your site.
November 29, 2016
Write a testimonial on someone’s product and have it posted on their site.
November 29, 2016

Create a virtual business card and include a link to your site.

Look for high quality card exchange sites and create a virtual business card on each site. Generally virtual business cards are professional, clean, flexible and customizable and meant to be exchanged because of the information they contain. Fill the information for your online bio with the link back to your site.
Sites to consider: