Minecraft name:
RezwanArefin01
What do you like the most about redstone?:
It’s Turing Complete 
(given infinite space… and force load…)
What’s a thing you have made which demonstrates redstone knowledge?:
Disclaimer: I do not actually know much about redstone. I’ve just started learning. However, I have good knowledge of computer architecture (from University course).
I’ve made an (traditional) ALU. See below.
What does the thing do?:
Bit-wise, it can compute any of 2^4 = 16 possible truth tables. Arithmetic-wise, it can do addition and subtraction.
Image(s) and/or video(s) of the device:
What do you plan on making for your build trial?:
The same ALU.
Do you agree with the rules?:
Yes, of course.