Crasbe from a1k.org crafted a new network device for suitable for every Amiga computer with OS2.0+.
It's a set of self developped PCB's and some parts that are readily available. There are different versions for A1000 and other Amiga computers. The NIC has a flashchip and can be flashed with the use of an USBasp device.
I have build this piece of hardware but haven't succeeded yet in getting it working.
Eventually it worked by using the plipbox.device version 0.5 in stead of 0.6 as advertised. Deflating the plipbox.device version 0.6 ZIP-file on the Amiga in stead of the PC, finally makes it work with version 0.6!