While Atlus doesn’t sell character goods in North America, their Japanese shop is filled to the brim with Persona plushies and Jack Frost beer mugs. Seriously!
This Jack Frost beer mug (called a jokki glass in Japan) can hold 360ml of liquid or, in plain English, a 12 oz can of beer. You can get one mailed to your home for 1,500 yen ($16) plus shipping. Unfortunately, Atlus’ D-Shop doesn’t ship items outside of Japan or stock them at Rosenqueen so you’ll have to vigilantly check eBay for one of these.