If you want to find one that actually is>,em>, it turns out that googling and/or searching ebay for "borosilicate" works quite well. (Says the happy owner of ten ~500 ml borosilicate coffee mugs.)
I've actually got a 1L Pyrex tea pitcher. The main trick is that I'd like something a bit larger, and so far I haven't found anything. Doesn't mean it's not out there, but I haven't found quite the search terms yet...
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