Make it trendy. Bitcoin will become fashionable for people at first. And that is how it will be adopted. Just like Starbucks was an unknown company at first, it became trendy and mainstream.
Drinking out of a cup with a Starbucks logo is nothing but a fashion statement.
I can't see people using it just because its trendy. People need a real reason to use it and at the moment most don't. I think if bitcoins value started to rise continually then people might get involved then like they did back in late 2013 but when it crashes they'll soon flee so we need to hope it can grow steadily.