V.C.
The other suggestions are great. "Thank yous" are the best! I know some of my patients' families had no extra money, so I certainly never expected anything at all.
But having worked in ECI, I can tell you the pay is not great (but the rewards are!) So a gift card would probably be appreciated, if it is allowed. Rather than the trinkets (which I certainly appreciated the thought!) were nice, I did not have a place for them. A gift card would have been better, like to the movies or grocery store.