The serrations remind me of a clasp used to hold an elastic strap in a garment bag, but whenever I try to orient the gidgie into something useful, the geometry doesn't work out. The teeth are on the wrong end, the screw is in the wrong hole, the bend doesn't belong, etc. More frustrating than golf.
At first they struck me as something used to hang a picture on a wall where you level the picture by hanging the gidgie on a nail and picking the right notch for balance, but I think the luggage idea makes a lot more sense.
Didn't she ditch her suitcase at Lae and ship it home? Seems to me she had a couple of nights on the road left and might have kept a small bag of some sort.