Thank you gifts for my RE and her assistants

Hey everyone,
My journey to a bfp was a long one and for the last year or so I've been going to an amazing fertility clinic. It's amazing the type of care I got and I'd like to do something nice for all of them. 
Thing is its 3 differnt departments - ultrasound, bloodwork and my fertility specialist with her nurses and a ton of support staff. 
Any suggestions? I'm thinking of getting 3 floral arrangements with chocolates or something like that? 
Or should I get something for the people that  helped me the most?
Any suggestions would be welcome!