. I recently bought a pair of double-walled, insulated, borosilicate clear glass mugs. They are oversized but quite lightweight, especially compared to a ceramic mug, and will hold not quite 2 cups, so that's perfect for me. Because they are double-walled, not only do they look cool when you are drinking out of them, but they will keep your tea/coffee hot for longer. Kind of like a thermos. I remember many years ago at work some people liked to use those plug-in mug heaters at their desks; I don't think you need that with these!
I bought these after I started reading a blog written by a mom concerned about her kids and lead ingestion. The blog evolved and now she regularly tests many different kitchenware items for lead content. Anything that is vintage or old is definitely suspect, as is anything with crack and chips and anything fired with bright colors. Yes, lead is still used in the manfacture of many NEW dishes, and where are 80% of ceramic mugs made? China. The FDA does not ban lead, but only "monitors" levels. (Dido, I would not be offended if you wanted to get rid of the mug I got you; I don't know if you're as risk-averse as I am when it comes to this stuff.)
Yesterday was a gorgeous day, weather-wise, and today promises to be the same. I'll work out today, then do more yardwork, as I did yesterday. I noticed a large pile of gray feathers under a large evergreen....a hawk got a bird, probably attracted to all the activity at my feeder, although the feeder is a good 200 feet away. 
I'm guessing a tufted titmouse.
March 12th, 2026 at 05:44 am 1773294278
However, they don’t contain lead though do they? I never thought about it before, and I should double check.
Also, I don’t think thermos can be put in the microwave, can they? I also have a free ceramic mug from a local gun range that I use whenever I want to microwave my drink, but if it’s leeching lead, I need to get rid of it. I think I will just play it safe here, get rid of it, and look for alternatives like yourself. Most of the time though, I’m trying to keep my drinks cool, rather than warm them up somehow, so I rarely use mugs.
March 14th, 2026 at 04:05 pm 1773504336
Tabs, no, you couldn't put a thermos in a microwave; they typically contain metal, which is generally a no-no for microwaves. You would probably destroy both the microwave and the thermos and possibly cause a fire if you tried that experiment.
March 15th, 2026 at 09:43 pm 1773611029
Tabs, hope you didn't nuke your Thermos...I think it would be a disaster on all fronts.
March 16th, 2026 at 09:01 pm 1773694891
In a way, that was also why I was shocked to find out that you can actually microwave the metallic lid on the Anyday cookware.
March 16th, 2026 at 09:09 pm 1773695344
March 17th, 2026 at 02:40 am 1773715240