The basic (silver) gift is a bag of some sort. Different bags are used for different itineraries.
For the Caribbean itineraries it used to be (up until this past year) a beach bag (different colors based on CC level):
View attachment 196058
But now it's the burlap bag.
For the Alaska and European cruises this year it's been a backpack (sort of a rucksack look):
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In 2012 there was a different backpack (the one that I'd love to get again) on our Hawaii cruise:
View attachment 196055
Previous years in Alaska/Europe it was sling bag (different colors based on CC level):
View attachment 196056
The gift is a bag for silver cruisers. Gold gets the bag and a tumbler. And Platinum gets the bag, tumbler, and a choice of truffles, fruit bowl, or sparkling wine.