Google-chrome – create a new Google Keep note from Chrome’s omnibox

If you enable Google Drive sync, all of your scratchpad notes should automatically transfer. In Chrome Settings → Extensions → Scratchpad → Options → Enable syncing to Google Docs.

You can also download your notes as plain text files either online or as a .zip file.

note: this worked for me as of May 20, but I could not replicate this on June 8th- the feature may have been disabled

Here's how, but this only works for new lists -- it won't work nicely if you already have some items checked:

• Open your list in Keep (web)
• Go to overflow menu (3 vertical dots) and choose "Hide Checkboxes" -- your list is now converted into text
• Copy text to any app that supports sorting (e.g. any spreadsheet app; some text editors support that too)
• Sort the text
• Copy it back into the note, overwriting original text
• Go to overflow menu, pick "Show Checkboxes"

Note, if you already have some items checked, you still have an easy option to delete them all (Keep will ask you about it when you chose "Hide Checkboxes").