This is a fantastic resource for service design
The toolkit is the outcome of a partnership between two design firms and Design Flanders. The toolkit was designed and written by two service providers who entered into a partnership specifically for service design: Namahn and Yellow Window.
There are templates for many different aspects of the process – useful to look at and adapt for your purposes.
One of the original resources developed by Roberta Tassi and Politecnico di Milano and Domus Academy
There are further templates below – a number of which which we have used in class.