Early-A Original-Style Trunk Mat (High-Quality) Sources?

Hey. I like that mat. Even if nobody ever sees it. It's kinda cool in its bare minimalism.

And, yes it's the blueish greenish plaid rubber mat that tears and disintegrates after only half a century.

I've cut carpet for the trunks of many other cars I've had, and may do the same for this one, but I'd like to have one that's just like the original, even if I don't usually use it, so I can put it down in the unlikely event that I actually go to a car show or something (I don't really like sitting around anywhere all day, so I don't really go to car shows).

But, ideally, I'd like a mat made of modern rubber that looks like the old one, but doesn't disintegrate when you drive around throwing your toolbox back and forth across the trunk in the curves.

And, yeah, if anyone has seen a modern "trunk liner" type mat, like I have had in a number of cars, that'd be great too, but I don't hold out much hope there.

The basic dilemma, though, is that the original mat will disintegrate if I leave it in the trunk, and, realistically, it will disintegrate if I try to fold it up and leave it somewhere "safe," because it's just chemically deteriorated over time, so I'd like to have a nice one that's like the original, so I don't feel like I have to keep the original in an airtight case.
Everything else in these cars is pretty durable, but those mats are just crap.

- Eric