Subject: Thank you for the Gift
I would like to express my sincere thank you for the lovely gift that you have sent to us. On behalf of my department/team, we truly appreciate this warm and thoughtful gesture of yours. Your choice of a __________ (specific type of gift) for our office has not gone unnoticed, and it means a great deal to all of us.
Once again, I want to convey our heartfelt appreciation for your kind idea and thank you very much for this wonderful and useful gift. We are grateful for your support. I am optimistic that our business relationship will continue to strengthen with each passing day.
__________ (Your Name)
__________ (Your Designation)