500 PNU is about 1300 m, so Antonia can roam around without (oh fear!) her earrings getting messed up! Thanks Les!

Note that in addition to gravity, there is also accelerations of the support point. If the head starts to move forward, the rings are likely to swing back.

I assume that the rings have their own 'point at' dial (Poser provides it automatically for 'pointed at' objects), so the degree of 'gravity' can be influenced for each ring separately.

As for a ponytail, that will be flexible and deform. The technique is better suited for stiff elements like a sword worn at the hip or a knapsack carried on a stick. 'Point at' can also be used to simulate hydraulic cylinders in articulated arms like they are found on excavators. The house and the piston are each parented one of two linked limbs and made to 'point at' each-other. 

'Point at' is one of those powerful tools in Poser that is not very well known and not often used.

Again: thanks, Les!

(p.s. added in edit: I saw EnglisBob's post after posting. Also for me, forget what I noted on the issue.)