Anxiety Spring
From Jenny Everywhere Wiki
The internal components of Clockwork Cherubs included an Anxiety Springs, located in the throat area. They wound themselves tighter when a Cherub did, in fact, feel anxious. (PROSE: Lord Thymon and the Department of Problem-Solving)
Philatel-426's “wound tight in his throat” when he met Mailbag-431's ghost. (PROSE: A Copper-Colored Christmas Carol)
