What are some examples of creative startup culture hacks?

You should check Buffer's blog. They share lots of their culture hacks, including assigning a new work-buddy to each of their team each week, cultivating a culture of radical transparency, working remotely, valuing their work-life balance and well-being, etc.

I just finished reading this article and it talks a lot about the mindset of a developer. I think making a good culture is about understanding that mindset, locating what is missing in your team and finding your own creative solution to that. I think, in essence, this essay talks about the empathy, between the developers and the people responsible for keeping the business running. Having some way to ease this communication will go a long way. Disclaimer: I have not yet managed a Dev. team in my company, but i have been a making software for the last 10 years and i relate a lot with what the author is trying to say.

A lot of amazing culture resources can be found on Culture Codes. Check out the Netflix deck in particular. Certainly more deliberate decisions were made there than creating v"culture hacks".