Signal mirror, around her neck, along with a magnetic compass.
When Einstein was around four, his father gave him a magnetic compass.
The magnetic compass, then, helps them get the turns right.
Such magnetic compasses are known in some other birds and animals.
It works like a magnetic compass placed on its side.
But we'll be sure to find it with magnetic compasses.
A magnetic compass may be no use here, but I can keep myself oriented by the heavens.
Have to be careful using a magnetic compass this far north, you know.
The magnetic compass is a device used for finding direction.
Another would give her a sweater and a magnetic compass.