Remove need for volunteers to set up workshops in advance

@StevenVanBlerk mentioned that one of the SDC workshops required creating a quite complex miro board in advance of class. Do you remember which workshop this was?

Ideally we should either have a template someone can just copy, or remove this need completely.

Assigning to @StevenVanBlerk for the "which workshop was this" piece, not necessarily to pick up fixing it!