...of David slinging. They may have been posted before. They were new to me, though.

This one is from Akdamar, Turkey. A 10th-century Armenian relief. The slinging style looks "Byzantine" to me.

Armenian church ?

I think I saw it in the movie Ararat, by Atom Egoyan

Ingenious. How do we know it's a sling ? (rather than a tool). Just asking-- sling looks likely enough.

The pillar with the "sling", if I'm not mistaken, shows not weapons, but agricultural tools, I think. So so kind of strap or muzzle ?

Very good points, Thearos and Masiakasaurus. I had automatically associated a sword and a war axe, but the "weapons" could as well be for agricultural purposes. It would be nice to have pictures of all sides of the pillar.

It's difficult to get a really good look at the hanging "tool" or "weapon". If it is a sling, one of the cords is considerably longer than the other one. This might be due to the fact that the retention cord has to be wrapped around the wrist or the hand as there is no toggle or loop.

It seems to me, however, that behind the 3-split-section there is something like another 3-split-section (vaguely shaped). It would then rather look like an agricultural (equestrian?) item, as Thearos proposed. And it would complement the "belt" and the "rope" on the same side of the pillar.

Long flexible looking thing on the far left is a thresher for grain. Like a pair of stupidly proportioned nunchuku.

Blade puts me in mind of typically deep bellied work blades like machete, cane knives, seax and kukri. Many ancient short swords had more or less the same design though. I notice no real guard though, and if that's a sling equal pride of place is given to a simple coil of rope and a water jug for watering in seeds.

Could be a sling. Many trades and pasttimes rely on knotted, braided, looped bits of cord. Aussie bush bridles are made almost entirely off 4 strand braids and good will. I'd need to know more about how the average Etruscan farmer got his fresh cut grain back to the homestead at the end of a day before discounting it as being a loop-intended length of baling twine though.

there's a whole thread about the pillar carvings.

looks like a sling to me - but could also be a headband used to aid carrying big stuff on your back.
Or a headband that doubles as a sling.

Given that these are all 'virtual' grave goods - it would make sense to have a sling.