A culture of trust is imperative, especially if you're employing millennials. If you behave like a helicopter parent, overseeing, or worse, taking over every project, it will directly conflict with the building of trust. What if they make a mistake? I think any successful entrepreneur will tell you that there is no mistake from which you cannot recover. Give your employees clear guidelines and let them spread their wings.
How can people know, like, and trust one another if they don't have the opportunity to play together? An occasional party or outing is not enough to build and maintain these relationships; weave these events into the fabric of your day-to-day company life. Create little rituals at employee meetings, have themes for certain days of the week and holidays, and engage in community projects together. Find quirky ways to celebrate success, no matter how small, and certainly create friendly competition; both work-related and personal. A chili cook-off and a game-filled afternoon at the park are a couple of things to consider. Too much work? Assign a monthly "culture captain" to plan out the month.
Tossing a few desks in a room doesn't cut it anymore. Our external environment has a significant impact on our internal thought process. Design a creative corner with bean bag chairs, chalk boards, and a lighthearted theme throughout. Allow employees to bring fun decorations to add to their work area. If you can afford it, hire a designer to create your unique space. A creative environment sets the bar for innovation. Creating a "culture of cool" attracts the kind of people who value the kind of culture you're trying to build.