do you take sushirolls in your bento?

I have been bento-ing for a year now (and still loving it!) and I have some favourites now. One of them is sushirolls, mainly because they are easy to make, they freeze well (and then keep well in my bento till lunch) and I love them! Of course I don't make them with raw fish, that would be dangerous, but with cucumber, surimi, tinned tuna (or other fish) made into a sort of mousse with mayo and wasabi or chilisauce.... great!! I was wondering if you take sushirolls in your bento too, and if so, what filling(s) dou you use? I'm looking for new things to try!