Amazon.com.au:Customer reviews: USB C to Ethernet Adapter, CHOETECH USB C Hub USB-C to USB 3.0 Hub Gigabit Ethernet RJ45 Port & 3-Port USB 3.0 Port Compatible with for 2018/2017/2016 MacBook/MacBook Pro,2017 iMac, Surface Book 2
This adapter is solidly made - it doesn't feel cheap but its price isn't going to break the bank. I mainly use it for the USB ports, but the ethernet adapter is great to have up my sleeve.
It's solved two commonly occurring situations for me. 1) the new MacBooks are frustratingly devoid of any normal USB ports, and this is a more sensible design than many of the official Mac products.
2) ISPs seem to insist internet speeds are only terribly slow when they find out your computer doesn't automatically have a wired connection, and it's "probably just the wifi" - this was great to be able to easily plug in and troubleshoot. I haven't had a wired computer for years, and this has made life a lot easier for those rare-ish situations where it's necessary.
We just bought a MacBook for my son. Being a PC supporter all my life, I painfully realised that these Macbooks don't have any USB Ports! So this little gadget came with a USB C adaptor, which can plug straight into the Macbook, and solved all our USB problems. So now we can plug in the USB flash drives, external mouse and keyboard. A total necessity for us now!