Volunteer recognition
The reason I feel it has to be WMF driven is that, in the case of certificates, they would have to produce them and they would have to create the barriers to prevent people just printing their own. They would have to be the custodians protecting the value of a certificate. I don't see how that can come from the community. Even if this task were ultimately farmed out to chapters the WMF would have to initiate this new idea and help chapters get up and running with this.
The same pertains to other things on the shopping list; if volunteers were to be recognised on press releases (as one of the ideas on the recommendation suggests) the releases would come from the WMF; the bulletin board idea would be located in the WMF offices; mugs/pins/key fobs would have to be funded centrally... etc.