Stone tablets are the only media I know of that lasts 1000s of years.
In all seriousness, this isn't a popular opinion around here, but cloud storage. I back my photos up to both iCloud and OneDrive. This way there is triple redundancy if you include the local copy. I trust Apple and Microsoft a lot more than myself to protect my data from spilled beverages, floods, fires, other acts of god, or just my own stupidity in general.
Which is why I recommend redundant cloud storage. There's a lot of options out there, pick 2. I like iCloud for the integration and convenience and OneDrive because it comes bundled with Office 365.
In all seriousness, this isn't a popular opinion around here, but cloud storage. I back my photos up to both iCloud and OneDrive. This way there is triple redundancy if you include the local copy. I trust Apple and Microsoft a lot more than myself to protect my data from spilled beverages, floods, fires, other acts of god, or just my own stupidity in general.