We always make sure that we have a few packs of Rice Seasoning (Furikake) at home.
If we find ourselves without anything for dinner, we could just cook a batch of sticky rice, and mix in a packet or two of Furikake. Optionally, you could drizzle a little sesame oil in the rice mixture too.
If you're concerned about the presentation, you can use a sushi form (or rice form?) to form the rice into sliced rolls like we did.
Note though that Furikake comes in many different flavors and is made from different ingredients. The most difficult part is choosing as we find ourselves unable to translate the ingredient list from the product label most of the time.
Fortunately, we were able to try this one out - a Korean brand - at a Korean supermarket. Surprise, surprise!
We've tried other brands and flavors but so far, this is the only one that we like.