A few book shelves that get filled over time with interesting literature on the company branche, organizations but also just fun reading etc. Making people read more is never a bad thing.
Have people put in already read books on some shelves. Make sure that nobody is keeping track of the books, just use common sense and ask people if they would be so kind as to return the books. Put in a company sticker if necessary, but don’t keep track! It will be time-consuming and an obstacle for most to even go there.
Keytoe is a Marketing and IT company that helps other organizations grow. Internally it is one of the most experimental and extreme (in terms of self organization) organizations out there. From colleagues setting their own salaries to a self-organizing exit round that happened.