What(to YOUR knowledge) is the most complicated arrangement of an everyday item?

Question: What(to YOUR knowledge) is the most complicated arrangement of an everyday item?
- Keywords:
  arrangement,
  complicated,
  item
Asked by 799xygg39 to Gavin on 17 Nov 2016.
- Gavin Coleman answered on 17 Nov 2016:
  
  I’m not sure I understand what you’re asking 🙁 Please comment and clarify! What do you mean by arrangement?

Question: What(to YOUR knowledge) is the most complicated arrangement of an everyday item?