Sound
Audio settings, use of sound effects & music
Bad audio ends remote sessions faster than bad video, and most participants do not know their setup is the problem.
Sound is the channel everything travels through. If participants cannot hear you clearly, they stop listening. If they are not sure whether they are muted, they go quiet. If background noise bleeds in from someone's environment, the group fragments. Sorting audio before the session is not an optional nice-to-have.
Sound can also be used deliberately: a soft ambient sound during working time, a short audio cue to signal a transition, or music during a break. These are small tools, but they help replace the texture that is missing when there is no shared physical space.