More and more mainstream companies are offering vegan options that are convenient. Minute Rice now offers single-serve portions of Organic Brown Rice, Organic White Rice, and Organic Red Quinoa and Brown Rice with Garlic. You can toss these in your lunch bag along with other items. Find these in your local supermarket.
For more information, see:
https://www.minuterice.com/en-us/products/categories/29/ReadytoServe.aspx