How to Pass an Exam?

Better to craft than to conjure!
Henrietta doesn't really like to conjure, and she's not good at it either: spells fly out of her head at the most necessary moment, and her spellbook always disappears somewhere. With a screwdriver, Henrietta manages much better than with a magic wand; it's easier for her to construct a flying vacuum cleaner or fix a clock using the most ordinary tools without resorting to magic.
But Henrietta is still a witch, which means she has to pass the witch's Exam. Terribly difficult! What to do? Fortunately, Henrietta always carries a toolbox with her. Well, craftsmanship against sorcery. Let's see how this ends.