Under Safari rev 13.0.4 I could drag the clip to DEVONThink extension icon to the Safari Toolbar so it was easy to access.
Under Safari 13.0.5 that feature has been removed.
Under both version I had the Clip To DEVONThink extension installed and enabled.
How do I get the clipper back into my toolbar?
Did you try disabling it in Safari’s Preferences > Extensions?
(Note: There seems to be a bug in Safari’s preferences, so you may need to disable, close the prefs, reopen them, then enable the extension.)
I had tried that but it didn’t work. So I tried again, disabled it, restarted Safari and then reenabled and it’s back.