soapbox /ˈsōpˌbäks/ (noun) a thing that provides an opportunity for someone to air their views publicly.

soap box / sōp bäks/ (noun) a container with a flat base and sides, typically square or rectangular and having a lid that holds a substance used with water for washing and cleaning.

Soap Box Session with Grey Box Collective /ˈsōpˌbäks ˈseSHən wiTH ɡrā bäks kəˈlektiv/ (event) a creative opportunity where humans hang out to air their views publicly in response to topics of GBC performances by making art in and on small containers that often hold substances used for washing and cleaning.
Check out our events page to see details about future Soap Box Sessions.