What a wonderful rabbit hole to go down. My takeaways are it could possibly be used for knitting, but traditional spool knitting that the Grandma uses in the video doesn't show up in history until the 1500s. If the Romans did use it for gloves then knitting has been around much longer than we have evidence of or they were using a different method with the dodecahedron.

Except that's probably not what they're for, I saw a video recently (I think it was this one) that went into detail about the reasons why it doesn't make much sense for these to be a knitting tool.

maybe its for measuring how much pasta you need to boil

That's a d12. Clearly, the Romans were using it to play D&D.

Last time one of these threads popped up, I saw someone suggest that it might have been a holder for some of those bottles with pointed bottoms the Romans had, don't remember the name. I'm not sure if this is a hypothesis with any level of acceptance, but it feels like it could be plausible just from looking at the thing, having different sized holes would allow different sizes of bottle to fit, and you'd want feet for each possible side that it could be resting on, which would explain the prongs.

Future archeologist: What do you think they used those things for?

My point is, maybe it was just art, fun, deko?

My mother got really interested in these things a while ago. I think she mostly buys into the glove-knitting theory. Whatever the case, I 3D printed her a model of one and it's sitting on the mantle over her fireplace.

It's a girth measurer.

Grandma's are the best

You put fossils in them dude

Possible Ritual Use™ 😸

Love these, though I'll never remember the name or how to write it ...

I just assumed it was one of these http://www.voting.ukscientists.com/penrose.html

To me it looks like something you'd use to easily make a Monkey Fist for throwing line to/from a pier. Though I guess that doesn't make much sense appearing in mountainous regions, unless they were made in the mountains (proximity to ore?)