Liberating structures is a website resource for workshops, tutorials and collaboration.
You can find a list of their methods on this page
https://www.liberatingstructures.com/ls-menu/
1,2,4, all http://www.liberatingstructures.com/1-1-2-4-all/
Liberating structures - impromptu networking http://www.liberatingstructures.com/2-impromptu-networking/