You can try potato + cottage cheese combination (mix potatoes with cottage cheese in about 5:3 proportions, avoid sweetened cheese

).
Or you can take your cooking all the way back to Russia and use sour cabbage filling.
Death combination: boiled and with strawberry filling:
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...but if you want some fruity flavors I'd rather suggest those yeast buns (more popular with fruit jam rather than actual fruits) :
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I said it once and I'll say it again no matter how many dumpster ratings will appear under this post: I like her, I can't help it and I would really like to see her get out of her predicament. I mean, how can I get angry at someone who, even when saying nasty things to me, doesn't really direct them at me - a middle-aged eurofag - but some celebrity.
You assume there are limits to my taste for sushi and sushi-like dishes