( CNN ) Bring your own beaker , goblet or vase and slurp it up . 7-Eleven is hosting the first Bring-Your-Own-Cup Slurpee Day at United States stores from 11 a.m. to 7 p.m. Saturday to kick off peak Slurpee season . This shot at brain freeze is n't free , but customers at participating stores can fill their `` cup '' of choice for $ 1.49 , the average cost of a medium Slurpee . Note : A garbage can is not a cup . In-store displays with a 10-inch-diameter hole will rule out anything too ridiculously large for Slurpee consumption , and cups must be sanitary . But within those parameters , pretty much anything goes : . `` From sand buckets to trophies , customers can unleash their creativity by bringing in their choice of a unique , fun Slurpee cup , '' said Laura Gordon , 7‑Eleven 's vice president of marketing and brand innovation , in a statement . The promotion is n't to be confused with Free Slurpee Day , traditionally celebrated each July 11 .
Bring your own large plastic ` cup '' for a $ 1.49 million fee . Any sanitary container less than six inches in diameter is fair sized .