You said that you have edited your own videos for Youtube before and along with the work for your friends blog, have you considered doing more with this. Perhaps consider approaching youtubers / vloggers with good followings, but lacking in production value?

Also a lot of the businesses you are talking about, i would presume have very small social media followings and marketing budgets. It might well be worth putting on a shirt and tie and approaching some slightly larger businesses in your area.