An ex nurse here, though I never took my finals due to leaving to get married and then being jilted. Spent virtually all of my working life in the NHS though.
I think GagaJo's idea is lovely, I am sure it would go down well. Although pizzas, chocolates, cakes and biscuits are not the healthiest items, they are more likely to cheer you up than a delivery of fresh veg! 
Favourite small treat when feeling blue or conversely a bit flush



