What type of backup do you use?

I agree with Rob

Just today I ran into an issue when deleting a bunch of old entries: At the very end of my cleaning up, I realized that the "1Password Account" entry (the one automatically created), got deleted somehow. No problem I said: just search the "Recently deleted" folder... but to my astonishment the item wasn't there to be found, nor in the Archive. So 1Password had a hiccup and lost 1 item that couldn't be found anywhere. The point is, as Rob said, for those times where the data cannot be retrieved (and since everything is synced on all platforms) how are we to get back on our feet for those instances where there's more than one item missing, like a deleted vault for exemple. So I backup the entire "family" to an encrypted SD card once every month and get that card to the bank (I do a rotation on two SD cards)... What you guys do to safe keep your vaults?