Apart from family members, ICE should also include your bff, officemates and neighbours. Why? Most often than not, we travel with our family members. Hence, a samaritan needs to be able to contact others within your circle of friends and good relationship.
Another important thing to note, make it a practice to call your ICE on a daily basis. Their numbers will appear in the most recent called numbers on your mobile. Easier for the samaritan to assist you whenever needed.
What I've done is that I would store these numbers and categorised them under 'ICE'. For example: RijalICE, KakakICE, AbgZamICE, LindaICE etc. Oh yessss...before saving these numbers as my ICE, I'd gave each of them a call and informed that they are my ICE. Hehehehe...just to ensure that they are well informed and ready mode and tenang-mode...don't panic my ICEs!
Who are your ICEs? Think about it...