repository of msix packages

Dear experts, is there a repository available from where free msix packages can be downloaded? Simple things like 7zip, notepad, MS Office,  AD console, cmd.exe ..       it's for a lab + training scenario..       Or do I have to create everything from scratch..    If something like this does not exist then I will try :  https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/msix-using-the-bulk-conversion-scripts/ba-p/1925133