I definitely 'second' the salad idea. capers would go well if you have a jar collecting dust in the fridge.
Or, if they are still in shell, wrap in a kitchen towel and drop them in hot water for a min or two just to reheat, and enjoy again with some butter and lemon.
If you are a maki roller, and have rice and seaweed and other sushi stuffs you like, you know what to do.
My fav is the spicy mayo:
about 1/2 cup of REAL mayo
tablespoon of sesame oil.
2 tsp of hot chili sesame oil (or just more of the red pepper blend below)
Healthy sprinkle of ichmi togarashi or any red pepper blend, really.
I'd do your crab with julienned cuke slices, spicy mayo, tobiko or masago and avocado. Maybe some good leaf lettuce if it was avail.
We cannot be friends if you do not know the difference between Mayo and Miracle Whip.