(March 18, 2016) — To celebrate Slurpee’s 50th anniversary, 7-Eleven is offering a “Bring Your Own Cup” event Friday and Saturday.
Between 11 a.m. and 7 p.m. you can bring just about anything remotely resembling a cup to participating 7-Eleven stores and fill it with the frozen treat.
— 7-ELEVEn (@7eleven) March 18, 2016
During the event, 7-Eleven will only charge $1.50, the average cost of a medium Slurpee.
There are a few limitations. Each person can only bring in one cup-like container, which must fit upright through an in-store display with a 10-inch diameter hole. Cups cannot be more than 9 inches wide and 11 inches tall and must be leak-proof, safe and sanitary. That means no trashcans or trash bags, kiddy pools or kitchen sinks.