Not going to lie, I miss keepass and its autotype function. I tried to mock something up with xdotool but never really worked right.
That is mostly what I did, though instead of a thumb drive I just used git to keep some copies around...though, on windows I just used scp because I had trouble with git-annex. I never trusted thumb drives that much. I have lost data from them and if a backup procedure is too manual, I know I wont follow it.
Then I bought a yubikey, and the more I looked at it, the more attractive the password-store model was. Worst case scenario, the only tools I really need are ssh, git, and opengpg. The only backup data, aside from my multiply-replicated repo is my restoration keyring, which can be copied to several USB sticks and is valid for potentially a decade or more. I can toss one in a bank safe deposit box (and some day I will get around to doing that!)
You CAN setup a yubikey in OTP mode with keepass via a plugin, but, OTP mode is suboptimal and could be very problematic if you have sync/backup issues.