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3. Other events like CCS and higher-level squares classes have chosen to use the voluntary-contribution-based model, but the other options above are also available if the event organizers choose to do so. This process does not involve any paperwork, but restricts what Tech Squares/the dance organizers can say about pricing, but does not restrict what the caller can say. (As a side note, the term "donation" is not allowed.)
There's also an email (and GDrive document) "Changes in Money Collection at CCS-like events" that got sent out in June 2016 that talks more about some of the options. Talk to an officer from that time (Veronica Boyce wrote it) to get access.