There are services where you can send in a binary file and get a custom cut vinyl record. (Which may be a bit ironic to the true vinyl afficionado. However, these custom records are usually limited in the frequency spectrum, I think, up to 10,000 Hz only.) Alternatively, there are comparably inexpensive cutting heads for standard turntables and, of course, cutting turntables for home. The latter tend to be rather expensive.
Edit: The article actually mentions the process briefly, getting hands-on with a lathe, in true DIY spirit.
The boot image is the same 64K BOOTDISK.IMG “example” RAM drive that can be downloaded at the bottom of the BootLPT article. This has been turned into an “IBM cassette tape”-protocol compliant audio signal using 5150CAXX, and sent straight to a record cutting lathe.
However, a Vienna-based startup (my hometown!) promises to sell you a hipster-compatible home cutting turn table for just $999 by the end of this year:
Oops, price has been updated to (a reduced) €2,499, also, “first deliveries expected to be March 2021”:
If you think this may be still too cheap for a serious computer peripheral, a more semiprofessional Vestax VRX-2000 will go for just $10,000. (I think, the Vestax has been the preferred option for this.) However, there seems to be also an alternative on the other end of the spectrum (apparently sold in Japan, also announced for the US and the UK, but the first article on this, I could find, dates suspiciously from April, 1st):
So, if you are good at DIY and own a CAM lathe, this may be a valid option for the purpose. (One of the media used for hobbyist cutting are oxidized aluminium disks, which will require the least of force, but will be also the least durable.) Otherwise – especially, if it’s about real audio, – it’s probably one of the send-in custom cutting services.