My mum bought Batman and I matching Thermoses (Thermae?) when we were at Uni.
They saved my life during the winter drawing trips to the Botanics or the Zoo (never in May, always in February). Because the tops are so wide you could put proper soup in them, which is why I liked them so much.
Now that I’m in charge of my own destiny (at least in terms of winter field trips), they’ve been languishing in the cupboard.