Businesses that start with a large audience are more likely to reach viral content fame organically (without paid tactics) because their audience propels their content forward. Businesses that are starting with a smaller audience may want to invest in paid promotion methods to ensure that their content reaches the most people possible to help it spread quickly.
Idea Starter #5 - Viral Video Songs: These are everywhere and they get good traction. You can add a song to a video that already exists, make one up, do a parody, a remake, you name it. When it comes to songs, don't worry about trying to make the Billboard 100. All you want to do is get something that is worthy of being passed around. A classic is this one, done in an office, that could have been done for any number of products.