I have a Debian laptop that I use for most things and a Windows 11 laptop that only gets powered on when I need to use the Lockdown Browser for my weekly quiz.

Is there such thing as having a full Windows 11 installation on a thumb drive that I can save things on? I need to be able to save files and the Lockdown Browser on it. And finally of course the Lockdown Browser must work when I use it as well. Is there such thing as that? Is there a reputable place where I can buy one so that I don’t waste many hours and probably fail trying to make one myself? Thanks in advance.