I'm about to head off to the grocery store, but I have I no idea what to get. I don't have an oven, but I do have a hot plate and refrigerator.
Rice, butter, cheese and eggs.
you can make risotto fairly easily on a low temperature which is good for hotplates.
same as any egg dish as low and slow applies there too. I wouldn't go past googling other low temperature dishes to make because hotplates are probably the worst fucking thing to cook on sometimes.