My solution is an old homepna adapter from A-Link. I found it at local flea market with price tag 1 €. The good thing is all I need to do is to attach adapter and start to use the net. Raspbian is connected immediately. Downside is the size of the adapter. However once connected you can fetch drivers for another adapter like A-Link USB54 (see picture below). After that Raspi Zero is not wired but working via wifi and can be placed anywhere.
It's a big one... but it works out-of-the-box
It's an A-Link adapter
Wireless adapter from A-Link