From Discworld MUD Wiki
This artifact is the result of a successful cast of the wizard spell Doctor Worblehat's Flaming Primate Premonition. It can be lighted or dowsed and recharged as needed.
This is a small wooden monkey with an even smaller cage where the belly should be. Within the cage is a tiny red crystal sitting on a golden dais. On the golden dais is a miniscule plaque with minute runes which might mean "Light Me". The wooden monkey is not lit, and the tiny crystal glimmers from within. A shimmer of octarine plays across the monkey subtly. It appears to have something written on it.
Reading the Artifact
You read the wooden monkey: Crafted by <wizard's name>.