I use a stainless travel mug every day, so it keeps my coffee good and hot, but I used to use a Denny's mug that had a smiling face on the front of it that changed from a frown to a smile when you poured hot coffee in.
I can also remember going to my Gram's house and always using the same glass from her cupboard.
I would get real touchy if someone else used "my" glass, so when she passed away, while everyone was snatching up their so called must haves; I took my glass and it's in my curio cabinet in it's place of honor.
I say keep your treasured cup, Tom. OR, put it in the curio cabinet in it's own ''place of honor".