MacRumors reviewed the CalDigit Thunderbolt 3 Mini Docks
A quote from the article:
Last month, CalDigit debuted a pair of Thunderbolt 3 mini Docks, offering the ability to connect dual 4K 60Hz displays, Ethernet, and USB all from one travel-sized accessory that doesn't require its own external power source. Available in dual DisplayPort and dual HDMI versions, CalDigit's Thunderbolt 3 mini Docks are a convenient way to make sure you can easily connect to multiple high-resolution displays wherever you go.CalDigit Thunderbolt 3 Mini Docks Review
I've had an opportunity to test out both versions of the dock, and I came away impressed with their performance, compactness, and usefulness in making sure you have the connectivity you need available away from your usual workplace.