Mine is quite simple.
Mondays and Thursday: Upper Body
Tuesdays and Fridays: Legs
To help bring up my arms, I train them first on Thursday, followed by back and chest, and lastly shoulders.
On Mondays, the order is reversed: Shoulders first, then back and chest, and arms last.
Legs are even simpler: Calves first, then hamstrings, and finally quads.