What do you suggest for the person that is hard to buy for?
DAVID H If this person is an advanced diver with Rescue Training, there is always some piece of equipment that they still need. Perhaps a line and reel for wreck diving. A quick dry towel or a diving related tee shirt would come in handy for anyone. A dive related hat to put their pin on would also be an idea.
RANDI A I am the president of our local Dive Rescue team and bought several pins to give to the team members. The pins are very good quality and every person thanked me for the pin and I saw several of them pin it on their jacket of hat immediately!