you can activate any windows or office by using vlmcsd (https://github.com/Wind4/vlmcsd). you can selfhost it, choose any windows version like 11 pro or enterprise or office product like office 24 enterprise. activate it using your kms server and you can enter the matching licence key every so often to activate it. doesn't cost a cent except hosting on 512mb/1cpu. i think there are public kms servers with vlmcsd too. obviously JUST FOR TESTING PURPOSES ;)