I don't use Starbucks mug anymore. I have been using it for 4 or 5 years. It is now collecting dead insects on a window sill in conservatory

At home I drink from
double walled only.
In the office either
Stoneware Mug or 450ml mug (for rooibos and lapacho)
A cup of Queen Anne with my late breakfast.
OK. Brunch.