An update on the situation: http://www.adn.com/article/20160412/rescue-team-gets-closer-hikers-stranded-kenai-peninsula-glacier

It sounds like they had some sort of tent, which didn't last long in the weather. They are now dug into a snow cave. A PJ team hopes to reach them today. The article says the PJs parachuted in, but I think that is an error. My understanding is they were inserted by helo at a lower elevation (as far up as the helo could get in the weather). It will be interesting to get the whole story after they are rescued.

I would probably start with about the same that one would carry on a day climb of a glaciated peak such as Rainier or Hood. Then add a few extra items because of the remote location. There is always a problem deciding how much to carry on a day trip.