Ask Siri How Much Free Space You Have on your Mac
Just ask Siri “How much free space do I have?” Siri will answer the question with the overall remaining space. If desired, you can drill down further to see how your Mac’s storage space is currently allocated.
Use Siri to Open Apps or Web Pages on Your Mac
Just ask Siri to open an app rather than using Spotlight or your dock. Same thing for web pages. Basically, any website address Siri can understand, can be opened in your default browser. Give the whole URL, i.e.: “Siri, open CapMac.org“. Note that Siri can not close apps for you.