This one is obviously more likely to work if you're selling products that lend themselves to being included in videos. We're guessing not too many people are going to be interested in software-development videos. (Although there's a niche for everything, we suppose.) But if you sell or make toys and can create extreme close-up videos of kids playing with the toys while narrating their every move? You've struck a YouTube gold mine. (We did say there's a niche for everything.)
So get out your video camera, and start making movies. Fire up a YouTube channel, promote it on your site and blog, get people to link to it, blow it up on social media — all your usual marketing ploys. Producing videos, besides being fun and entertaining, is a way of diversifying your content that will make your site more attractive to search engines. It also allows you to expand your brand to a platform that might have an entirely new audience. You never know, it could end up being your most lucrative effort yet!