Bali seems to have done well with C19 despite significant travel from Chine. Also anecdotal reports of significant work absences due to illness in November and December, much earlier than one would expect (could of course be totally unrelated)
Evidence of links between temperature/sunshine and C19. Many of the places with the worst outbreaks seem to be in a narrow range of latitudes and temperatures
Collection of anecdotes about super spreaders. TL;DR parties and religious ceremonies seem to be the major cause of these
How air conditioning air currents spread coronavirus among tables in a restaurant; only tables in the path of the air currents from the original person were infected.