you can fulfill a mobile Starbucks order via the app with your own reusable cup. To do this, you’ll select the “Personal Cup” option in the Starbucks app under the “Customize” section ...
"From Reese's Peanut Butter Pumpkins to Reese's Peanut Butter Cup Thins and everything in between, we know how personal your ideal ... fans a chance to customize their own cups.