Here are some of my favorites. One of them (Counter) behaves strangely. It doesn't appear to be stable, but it takes a long, long time to change appreciably. An

Here are some of my favorites. One of them (Counter) behaves strangely. It doesn't appear to be stable, but it takes a long, long time to change appreciably. Another one (Sewing Machine) seems semi-stable in that it seems to settle around the same kind of almost-but-not-quite-chaotic pattern. Warpspeed http://wry.me/hacking/Turing-Drawings/#2,11,1,5,1,0,1,1,1,5,0,0,7,2,1,7,3,1,7,3,0,9,2,0,4,2,0,7,1,1,7,2,1,7,1,0,3,1,1,6,2,0,4,3,0,7,0,1,2,0,1,2,2,0,8,3,0,10,1,0,1,2,0,3,1,0,2,1 http://wry.me/hacking/Turing-Drawings/#2,11,1,5,1,0,1,1,1,5,... City Corner http://wry.me/hacking/Turing-Drawings/#2,11,1,10,0,1,5,2,0,8,0,1,6,2,1,10,2,1,9,1,1,10,0,1,7,2,0,6,2,1,9,3,0,5,1,1,2,0,1,3,1,0,3,1,1,3,0,1,2,2,1,5,0,0,7,0,1,9,3,1,8,1,0,5,1,0,2,3 http://wry.me/hacking/Turing-Drawings/#2,11,1,10,0,1,5,2,0,8... Coloring Inside the Lines http://wry.me/hacking/Turing-Drawings/#2,11,0,10,2,0,4,3,0,2,0,1,5,2,0,1,3,1,9,2,1,9,0,1,9,1,1,3,3,1,6,2,0,10,3,1,5,0,1,7,2,0,3,0,1,8,1,1,9,0,1,1,3,1,2,1,1,7,2,0,10,2,1,2,2,1,2,3 http://wry.me/hacking/Turing-Drawings/#2,11,0,10,2,0,4,3,0,2... Sewing Machine http://wry.me/hacking/Turing-Drawings/#2,11,1,7,3,0,2,0,0,3,3,1,9,0,1,5,2,1,9,1,0,6,1,1,8,3,0,3,0,0,9,1,1,1,1,1,8,2,1,6,3,1,5,1,0,7,3,1,6,3,0,3,0,1,4,1,1,6,0,1,9,0,0,2,1,0,9,0 http://wry.me/hacking/Turing-Drawings/#2,11,1,7,3,0,2,0,0,3,... Seems semi-stable? Folding Paper Trick http://wry.me/hacking/Turing-Drawings/#2,11,1,4,1,0,5,3,0,10,2,1,9,3,1,6,2,1,8,3,0,4,3,1,4,0,1,2,0,1,2,0,0,6,0,1,3,1,0,6,1,0,6,0,1,6,3,0,5,1,1,6,3,1,10,1,0,6,2,1,2,3,1,7,0,0,5,2 http://wry.me/hacking/Turing-Drawings/#2,11,1,4,1,0,5,3,0,10... Stable http://wry.me/hacking/Turing-Drawings/#5,3,3,1,0,3,1,0,3,1,0,3,2,3,3,1,3,3,1,0,2,1,2,0,2,2,0,2,2,3,1,2,3,1,3,4,2,2,2,1,0,4,2,0,0,2,3 http://wry.me/hacking/Turing-Drawings/#5,3,3,1,0,3,1,0,3,1,0... Counter: http://wry.me/hacking/Turing-Drawings/#5,3,1,1,0,3,1,3,2,1,2,1,1,1,1,1,1,0,2,3,0,1,2,2,1,2,0,2,0,0,1,0,4,1,3,4,2,1,0,2,0,2,1,2,2,1,0 http://wry.me/hacking/Turing-Drawings/#5,3,1,1,0,3,1,3,2,1,2... This one seems to behave like some kind of adder. Even at the highest speed setting it takes a long time to see much change, but the black lines seem to grow and move similar to how a binary adder operates. Spilled Drink http://wry.me/hacking/Turing-Drawings/#13,21,10,11,1,0,7,0,4,17,3,7,16,0,11,4,1,9,3,1,7,17,3,1,7,3,11,11,1,1,11,1,8,10,0,1,8,1,1,10,2,3,8,2,0,19,2,2,15,3,8,18,0,10,17,3,11,17,2,0,1,3,4,9,3,2,1,1,10,16,3,5,4,1,5,2,1,10,10,3,1,16,3,0,18,2,7,15,0,6,15,0,10,20,2,9,14,2,11,1,1,3,10,2,9,8,3,3,5,2,3,19,2,7,15,0,8,20,1,0,15,0,7,16,0,12,12,0,0,14,0,12,5,3,5,18,1,7,5,1,3,4,2,0,17,1,6,1,1,4,7,2,3,11,2,4,11,3,6,14,2,12,9,3,11,1,2,1,16,1,3,10,1,4,17,3,9,6,3,6,15,0,11,10,1,4,15,2,12,7,2,11,6,1,7,15,1,9,11,1,1,1,3,2,4,0,4,6,2,0,1,2,5,3,2,5,15,0,5,12,0,7,19,1,6,5,0,6,5,0,0,15,1,4,2,0,0,17,2,3,20,1,0,18,1,12,12,2,7,6,0,5,19,3,6,12,1,8,20,3,1,9,1,1,15,1,6,19,0,11,3,0,2,6,2,10,20,3,1,16,1,2,10,3,2,14,0,4,2,3,3,18,3,1,5,2,6,19,3,0,13,2,7,8,2,10,4,0,6,7,1,4,12,2,7,20,1,7,11,3,1,14,0,1,15,1,11,19,2,8,20,0,3,17,2,7,14,3,12,14,1,2,2,0,2,15,1,3,19,0,9,17,2,5,8,2,7,15,2,1,8,0,9,15,3,8,14,0,6,20,0,4,8,3,6,5,0,3,1,2,12,6,3,4,16,0,7,2,0,12,13,1,9,16,1,11,10,2,2,5,0,9,8,3,7,2,0,11,9,0,3,15,1,0,3,2,11,17,0,1,9,2,5,5,0,1,3,0,7,14,0,6,1,0,5,1,2,11,18,1,3,20,2,10,14,0,12,2,1,5,19,3,10,7,2,11,11,2,9,12,0,9,11,3,3,6,1,12,15,0,10,4,3,6,4,1,5,6,2,2,7,2,9,6,0,11,5,0,0,9,2,2,16,3,8,5,2,5,8,1,10,18,2,3,17,3,12,9,1,12,7,0,4,8,2,5,11,2,9,11,2,10,7,2,11,5,2,9,5,2,10,3,1,9,2,2,10,10,1,7,17,0,8,16,1,8,14,1,9,14,3,6,11,1,2,19,1,6,13,2,2,12,0,8,10,1,10,6,3,6,7,1,3,4,2,6,6,2,12,13,2,1,14,3,10,15,0,0,7,1,9,12,3,6,9,3,11,1,3,5,5,0,7,3,2,4,10,0,2,2,0,9,9,0,5,2,0,9,15,3,9,9,0,6,9,1,9,15,2,7,6,0,10,4,3,6,13,0,6,7,3,7,17,2,12,11,2,1,10,2,0,4,0,12,12,0,11,8,2,2,11,0,7,2,0,5,4,2,9,16,0,8,2,3,7,11,1,2,7,3,3,2,2,3,20,0,4,20,0,7,10,1,6,5,3,12,13,1,0,14,3,1,7,0,5,8,1,11,7,3,6,13,3,3,7,0,7,10,3,1,2,0,7,4,2,1,1,2,3,11,3,4,6,3,7,1,0,3,20,0,7,4,3,5,7,0,10,8,2,4,20,2,7,11,2,9,8,1,10,2,0,12,8,1,0,20,1,12,15,3,8,3,3,4,6,0,9,15,0,5,4,0,6,11,2,12,7,0,4,8,3,5,11,1,5,19,3,11,5,1,5,2,2,1,20,0,3,20,1,2,10,3,3,4,2,7,11,2,11,17,3 http://wry.me/hacking/Turing-Drawings/#13,21,10,11,1,0,7,0,4... Donkey Kong http://wry.me/hacking/Turing-Drawings/#13,21,0,17,3,11,4,0,0,12,0,10,5,3,11,17,2,11,14,2,4,20,3,12,2,2,1,13,3,5,14,1,5,12,0,10,16,0,3,3,3,8,4,3,2,13,2,10,11,2,0,19,2,10,3,3,5,4,0,6,19,3,8,10,2,1,20,0,10,15,2,11,18,1,8,18,3,5,7,2,3,9,0,2,13,3,6,12,2,9,13,1,6,15,1,11,18,2,12,5,3,8,16,0,1,2,2,8,18,2,12,13,0,10,10,0,9,5,2,10,8,1,10,1,3,5,17,1,1,15,2,9,12,1,5,7,0,9,16,3,12,11,1,10,4,1,0,19,2,12,16,3,2,20,0,4,13,2,12,18,1,7,12,1,7,11,3,12,3,0,1,1,3,1,4,1,1,17,2,6,20,0,4,4,1,12,18,1,12,10,3,11,12,0,12,12,2,6,11,3,4,1,0,7,4,3,0,1,1,8,16,2,6,19,2,9,6,0,6,10,3,2,2,0,1,7,0,0,15,2,1,5,0,6,6,0,9,19,3,9,5,0,0,9,1,8,17,1,0,11,2,7,3,1,1,18,2,1,17,0,9,17,3,2,11,1,1,6,1,10,8,3,8,10,0,0,6,0,6,9,1,8,1,3,5,12,3,6,3,2,9,4,2,10,9,1,8,12,2,12,12,0,7,19,2,11,9,1,12,20,0,7,18,2,10,8,2,11,8,2,1,7,1,9,3,0,3,2,3,4,12,2,3,14,2,4,7,3,3,19,2,5,18,2,2,16,2,9,19,1,0,7,2,7,20,1,9,9,2,1,7,0,3,9,2,10,11,2,2,15,2,2,9,3,8,8,1,6,19,2,9,20,2,1,5,0,8,17,3,4,5,0,10,9,3,10,10,0,11,2,0,8,10,0,7,20,2,0,9,3,8,19,3,10,8,1,9,16,0,1,11,0,10,7,0,10,20,0,11,6,3,8,12,1,6,7,1,7,2,2,0,10,1,4,17,0,2,9,1,5,8,3,8,14,2,7,11,3,9,20,1,0,1,0,2,17,1,4,11,3,4,13,0,4,3,2,1,17,0,12,17,0,4,6,3,9,14,2,7,7,1,2,7,3,2,17,2,11,18,3,8,13,0,8,3,3,0,20,0,4,1,0,2,7,3,11,20,2,4,14,2,9,10,3,10,14,3,6,20,0,11,4,2,2,4,0,3,6,0,11,16,1,2,9,0,12,19,3,8,4,3,2,2,0,6,14,3,4,17,2,10,16,0,4,14,3,11,5,3,6,17,1,2,19,0,8,3,0,1,13,1,11,11,3,6,12,1,0,12,2,5,8,3,9,9,2,12,12,1,9,20,2,10,1,2,5,3,3,10,1,1,12,11,2,8,10,2,4,1,0,0,2,1,5,3,0,10,7,0,7,19,0,10,12,3,11,11,3,5,11,2,2,2,2,2,15,1,6,8,0,5,18,3,10,11,0,5,3,2,6,16,3,6,20,3,10,5,1,9,10,1,10,18,1,7,20,2,11,16,3,2,16,0,10,6,2,10,11,1,3,1,2,3,18,1,7,11,2,3,2,3,8,8,0,11,20,1,8,19,1,10,11,1,2,13,0,11,7,3,9,14,2,1,5,0,8,16,0,11,3,0,8,8,1,0,14,2,7,18,0,9,12,0,5,2,3,11,19,3,0,20,3,1,4,1,6,12,0,2,12,0,8,5,2,1,17,2,7,20,2,1,20,3,6,11,0,1,17,0,3,17,3,6,2,3,3,19,0,1,19,3,5,12,2,11,2,0,7,10,3,10,9,2,12,11,2,9,15,0,5,9,2,12,9,3,7,16,2,3,16,2 http://wry.me/hacking/Turing-Drawings/#13,21,0,17,3,11,4,0,0...