Microwave saucepans that aren't fucking white plastic. Borosilicate, with a lid, no staining or acid etches. 500ml, 1l, 2l, perfect for a tin of beans, a continental pasta, reheating some sauce. Get on It.
You can use any ceramic or glass dishes, as long as there are no metal trims on them. I just use my normal bowls and plates for reheating.
Also I think you can buy Pyrex ones with a glass bowl and plastic lid if you need something transportable.
Pyrex is your friend here. Colesworth often has 500 ml measuring jugs in pyrex that work fine for me. And bigger ones too. For lidded stuff, quite a lot of kitchen shops have small casserole dishes in pyrex that have fitted lids. Various sizes from 500 ml upwards. Try Hotel Agencies in Nicholson St Fitzroy or Cedar Hospitality Supplies in Brunswick.
oh I love it when they go "high borosilicate glass material" you just know that bitch is tempered soda lime that once sat on the same shelf as borosilicate