Maybe I don't understand the Challenge correctly but . . .
1) None of the 42 emanations of Maat could be instated unless the person was an adherent of the Egyptian religion. All 42 are ethical statements,
Are these the ones?
1. I honor virtue
2. I benefit with gratitude
3. I am peaceful
4. I respect the property of others
5. I affirm that all life is sacred
6. I give offerings that are genuine
7. I live in truth
8. I regard all altars with respect
9. I speak with sincerity
10. I consume only my fair share
11. I offer words of good intent
12. I relate in peace
13. I honor animals with reverence
14. I can be trusted
15. I care for the earth
16. I keep my own council
17. I speak positively of others
18. I remain in balance with my emotions
19. I am trustful in my relationships
20. I hold purity in high esteem
21. I spread joy
22. I do the best I can
23. I communicate with compassion
24. I listen to opposing opinions
25. I create harmony
26. I invoke laughter
27. I am open to love in various forms
28. I am forgiving
29. I am kind
30. I act respectfully
31. I am accepting
32. I follow my inner guidance
33. I converse with awareness
34. I do good
35. I give blessings
36. I keep the waters pure
37. I speak with good intent
38. I praise the Goddess and the God
39. I am humble
40. I achieve with integrity
41. I advance through my own abilities
42. I embrace the All
Many of these could be affirmed as virtues or performed as actions by a nonbeliever.