This Baseus USB C 65 Watt 3-port charger. I recently bought one to carry in my laptop bag as a portable charger, and it has proven to be indispensable. I've already used it while out and about or on trips out of town to simultaneously charge 3 devices at once. Such as my phone, earbuds, and laptop. It's so small and lightweight, and you can bring a single charging brick to take care of all your devices. I'm never going back to having to carry multiple chargers with me.
If your laptop charges via usb-c then your laptop charger can already charge all three of the devices you mentioned, and at a high rate. Why would you need to carry multiple chargers? I see the benefit of charging 3 devices at once, but also that's not something I've ever needed to do.
Having a single charger for multiple devices is great, especially when travelling. It's saved me a couple times in places where there's only a single outlet available (trains, hostels, even some hotels). While at home it's next to my bed for charging my watch, phone and earbuds overnight.
I bought one of those chargers to charge my notebook and smartphone but I kind of regret not just getting an additional $30 charger for my notebook. It offers the same functionality apart from charging three devices at once, which I basically never use.
If you get one of these I would at least recommend getting a nice, long C-to-C cable. I only have a bunch of 1m cables, which makes charging my notebook quite annoying.