He dutifully followed her, and as he did he went for a breast pocket of his vest.

"This!" He handed up a cuboid, pencil-like clear stick of... material. "Doozers are these little guys, knee-high to a Fraggle, who build all sorts of constructions all around the Rock that are also edible for Fraggles. And they don't mind us eating them either, because that just gives them room to keep constructing more!"