There are a number of funds that offer financial aid for social initiatives right now.
The NOW scheme is intended for employers who are experiencing a substantial loss of turnover (at least 20%) as a result of the Corona virus. They can submit an application to the UWV for an allowance towards wage costs and receive an advance for this. Volunteer organizations can also make use of this scheme.
An article by the KNHM about what you can do if the income of your volunteer organization disappears.