What are the recommended boiler or cooker which I can use to cook porridge at work and bring home in time to feed baby? TIA

I used to cook semi quinoa porridge at work during lunch time using the mini rice cooker which once a hit for making tomato rice. Because it is quinoa, it cooks really fast. But stopped after sometime when milk supply stabilized. Baby is now in toddlerhood. We now boil soup using the electronic pressure cooker. Nutritious soup for the whole family ready in 1hr time. It can be used to cook porridge and other dishes too.