Honestly, I am not sure media that is readily available today will be available in 1000 years.
Indeed. Perhaps in a thousand years the only readable media from the 21
st Century will be film, vinyl records, analog magnetic tape, and print.
That's why I'm somewhat of a data hoarder. Data is ephemeral. I routinely save copies of webpages that have info important to me. One annoying quirk of Firefox is that when you download a webpage locally, the download fails near the end and you have to click retry to save it.
Physical storage formats and data formats come and go. Whenever you see something on the internet that's important to you, save a copy locally.