Formal and Respectful:
* आदरणीय शिक्षक महोदय/महोदया (Aadarniya Shikshak Mahoday/Mahodaya) - Respected Teacher Sir/Madam
* पूजनीय गुरुजन (Poojaniya Gurujan) - Venerable Guru
* शिक्षा के प्रणेता (Shiksha ke Praneta) - Pioneer of Education
* ज्ञान के दीपक (Gyan ke Deepak) - Light of Knowledge
* विद्वान शिक्षक (Vidwan Shikshak) - Learned Teacher
Informal and Affectionate:
* प्रिय शिक्षक (Priya Shikshak) - Dear Teacher
* हमें प्यारे शिक्षक (Hamen Pyare Shikshak) - Beloved Teacher
* हमारे आदर्श शिक्षक (Hamare Aadarsh Shikshak) - Our Ideal Teacher
* प्रेरणा स्त्रोत (Prerna Srot) - Source of Inspiration
* स्नेहपूर्ण गुरु (Snehapurn Guru) - Loving Guru
Creative and Playful:
* शिक्षा के जादूगर (Shiksha ke Jaadugar) - Magician of Education
* ज्ञान का खजाना (Gyan ka Khajana) - Treasure of Knowledge
* विद्यार्थियों के मित्र (Vidyarthiyon ke Mitr) - Friend of Students
* सफलता के सारथी (Safalta ke Sarathi) - Charioteer of Success
* बच्चों के दिलों के राजा/रानी (Bachchon ke Dilon ke Raja/Rani) - King/Queen of Children's Hearts
Additionally, you can combine these titles with phrases like:
* आपकी सेवाओं के लिए धन्यवाद (Aapki Sewaon ke Liye Dhanyavaad) - Thank you for your service.
* आपकी स्मृतियाँ हमेशा हमारे साथ रहेंगी (Aapki Smritiyaan Hamesha Hamare Saath Rahengi) - Your memories will always be with us.
* शुभकामनाएँ (Shubhkamnaye) - Best Wishes
Remember to choose a title that best fits the occasion, the teacher's personality, and the tone of the farewell party.