Last year my curiosity collection took the form of a shared Thinglink image where students suggested non-fiction readings, videos, and other texts that coincided with their ongoing exploration of a self-generated question (using the Question Formulation Technique) for each novel we read. You can see an example here: https://www.thinglink.com/scene/576120822666625026
This year I introduced my classes to our curiosity collection on the second day of school. I plan to use Thinglink again, but I encouraged my students to catalog their curiosity early and often. You can see our ongoing collection on Twitter and Instagram using the hashtag #zapfv.