Status Lights & Desk Ambient

An agent can run for minutes and then sit waiting for you without you noticing. These put that state somewhere your eye already goes, so you stop tabbing over to check whether it is finished.

Worth knowing before you buy: none of them detect your agent's state on their own. Each needs a small hook written once, so they suit someone who would enjoy that as a ten-minute project rather than someone who wants it working the moment it is unwrapped.