He took a thin, nearly invisible fishing line and tied it to the spine of a book called Reasons to Behave: A Guide for Snots . He ran the line across the doorway at ankle height, then looped it up to a small bell on a high shelf. If you tripped, the bell rang. If the bell rang, a hidden spring-loaded arm would knock over a jar of marbles. The marbles would roll down a sloped board (he built it from a shelf he removed) and funnel into a small pit he’d dug behind the armchair, which he then covered with a rug.
His foot caught the fishing line.
It was, he decided, a very good start.
Finn thought for a moment. He’d grown up poor and inventive. His specialty was the long game. tricky traps & naughty
Leo squinted at him. “You’re not an adult. You’re, like, twenty.” He took a thin, nearly invisible fishing line
“Psychological warfare,” Morgause said approvingly. “But not enough. Add something tricky .” If the bell rang, a hidden spring-loaded arm