To be able to operate, meetups, open-source projects, parent associations, neighbourhood associations, pet projects, clubs, unions, movements, non-profits, business incubators - all are either forced to use a physical glass jar, asking a sponsor to directly pay for their expenses or front the huge overhead of setting up and managing a corporation or a non-profit. Even if they manage to achieve it in a way that is neither inefficient nor opaque, it is overkill.