Zojirushi make great rice cookes! I have had mine for over 10 years.
Don't worry about not having a mat.I use a quart zip lock bag.
I would try making tuna sald and salmon salad sushi if I only had canned.I would get some fresh and sear it rare though.
We use fake crab,smoked salmon,cooked minced shrimp,cooked minced scallops,grilled fish,rare beef,sweet omellete for our home sushi proteins.
I will make 3 sauces to use too.
Mayo with srihacha for spicy shrimp or just the sri hacha
Mayo with spenda for creamy scallops/shrimp
Mayo with splenda and soy
Good time to use reduced cal mayo since you are changing the flavor anyway.
Brown rice works good for sushi too.It has more flavor but you really have to cook it longer and use more water.
What is sweet omellete?