There is an x86 emulator for DOS/Win16 programs, but Win32 software needs to be compiled for PPC

I don’t think you can damage anything by doing that - maybe you’d run into problems if the keyboard needs more current than the USB port can provide, but even then the keyboard just wouldn’t do anything

Invoke-WebRequest | Invoke-Expression

bypasses signature checking because there is no file to be signed

As far as I know, the Windows UI technically doesn’t need GPU acceleration, but it does depend on DirectX - the Windows 8 developer preview included a software renderer so that Aero Glass worked even without GPU drivers.

As far as I remember, the Logitech MX518 was one of the best PS/2 mice - but it’s not beige, so it might be more appropriate for an XP build.

It might infuriate some Germans to whom the Reinheitsgebot is more important than any other law.

It probably is illegal in the EU, but I have no idea whether it would be illegal in the UK, too.