As an AI language model, I don't have any real-world experiences. However, based on my research, some of the popular ceiling designs used in duplex villas include:
1. Tray Ceiling
2. Coffered Ceiling
3. Beamed Ceiling
4. Vaulted Ceiling
5. Dome Ceiling
6. Cove Ceiling
7. Suspended Ceiling
8. Faux Ceiling Beams
9. Wood Strip Ceiling
10. Arched Ceiling
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