Pretty much all of those. It can tell the time and date, get you weather, do simple web searches, and play music. I use mine to control my lights and speakers. unfortunately they've discontinued the Chromecast Audio, in typical Google fashion, so I've no idea how to get it to control external speakers. It can play audio, just it doesn't sound very good on the nest mini.

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Some problems I've run into is that you cannot use the power cable for accurate positioning, so hitting the capacitive volume buttons on either side might be a little tricky. Fortunately, you can control the volume via voice. The Google Home app has okay accessibility. It's useable and fully labeled, but it's definitely not winning any awards. Overall, it's a helpful little product. Check out r/googlehome for tips and community posts.

I have it play the news mainly, NPR now, BBC World, and sometimes Reuters TV, but also tech news from Business Insider and Mashable.
The local news options are very limited, where I lived before (Portland Oregon) I had the choice of like three sources, but here in Southern New Mexico I have none.
Still, it's nice to be able to just listen and not deal with websites, hands free while doing other stuff.
It can also stream several radio stations for free all around the country. It doesn't have all of them but it's a nice way to enjoy some music without paying for a subscription, and the speaker in the newest version is pretty good.
I also use it for things like checking the weather, when the sun will go down, alarms and timers, spelling, and general knowledge questions. It does alright but I do get more from a phone or laptop for sure. It's convenient though...
I call my phone when it gets lost with it too LOL.

After some use I think the Amazon Echo is slightly better than the Google Home Mini. I like that both devices have an option to turn on a beginning and ending sound so you can tell when they are listening even if you can’t see the lights light up. I think there skills are weird to manage on the Echo, and the platform isn’t easy to understand on the Google Home, but overall they’re helpful devices. Echo also allows you to control Audible books which is nice. You can also set both up to make phone calls.

I would strongly urge anyone who is getting one of these mini assistant type things like the nest, amazon echo, alexa, cortana or whatever to seriously look at both the pros and the cons. every other month i am reading about scandals coming out about these things listening in on people and reporting back to the mother-ship. its a huge breach of privacy and i wouldn't trust that the information they gather is going to be used in your best interest. i wouldn't recommend any sighted person getting one ever but i guess if you have a serious vision impairment it might be worth the sacrifice.