After searching for a bit, I didn't find a mug holder model that fit my favorite mug 'just right' so I did what any of us would do... right? I've printed two thus far. One in PETG with magnets and and another in PLA I printed with "Fuzzy Skin" enabled (HIGHLY recommend) that's my trusty desk-side 'daily driver'.
The author marked this model as their own original creation.