There are a lot of times when you don’t actually need admin privileges to install that bundled-up *.msi.
Take AdoptOpenJDK binaries for instance.
You can simply run:
The important settings are the:
INSTALLDIR= which has to be a directory where you have write privileges and the
MSIINSTALLPERUSER= which with the setting of
1 will install it as a single user.
Also tested to work with 7zip.