Too easy! Going to build one with NAND gates.
Have fun with that
https://hackaday.com/2017/01/03/make-logic-gates-out-of-almo...
Or you could go the way of this quite impressive project: http://fpgaretrocomputing.org/
Have fun with that
https://hackaday.com/2017/01/03/make-logic-gates-out-of-almo...