If you decide that you simply aren't getting enough Calpis by mixing it in with your donuts and drinks, you can buy a combination that allows you get a glass and stirrer as part of a set. The one that is 580 yen ($5.80) is a "drink set" which is one donut, one drink and a glass and the one that is 700 yen ($7.00) is a "donut set" which includes 5 donuts and a glass. If you don't think that these glasses are worth the extra scratch, there's a little surprise that may change your mind.
The bottom of each glass has a Mister Donut design on the bottom. The blue one has "pon de lion" and the pink one a french cruller design which features a lamb. This added cuteness surely will enhance the value of the glasses such that you will now longer be embarrassed to drink from a glass which has a word on it which sounds like "bovine urine" when you say it allowed.