Fun to play with, but I haven't yet found how to create a wire that carries a signal around a corner without introducing instability or oscillation. A series of 'or' or 'xor' gates will carry a signal from input to output, but the other two output directions from any of those gates lead to cells that feed into the previous cell, so placing either an 'or' or 'xor' there introduces feedback. The inability to change the…
A big hexagon shape made out of xor gates imitates a xor gate, except that the inputs and outputs are nicely separated. You can omit the inputs as you want.
Here's a supersized XOR gate made out of supersized XOR gates.