You can use #CKBunker with #raspblitz find instructions here https://openoms.github.io/bitcoin-tutorials/ckbunker_on_blitz.html

This automated Static Channel Backup method made it's way to the #RaspBlitz a good while ago:
https://github.com/rootzoll/raspiblitz/blob/master/README.md#b-dropbox-backup-target
and people love it!

Now on the 1.5 (including RC-s) the script is available from the menu.
H/t: @vindaRd@twitter.com, @rootzoll@twitter.com, @alexbosworth@twitter.com