'Bring Your Own Cup' promotion proves slurpees don't need cups

If there's one place where people like to get the most bang for their buck, it's 7-Eleven. The gas station/convenience store offers insanely low prices, but on 'Bring Your Own Cup Day' the chain encourages people to really take advantage of its biggest bargain of the year.

This past Friday and Saturday, 7-Eleven had its annual #BYOC affair, which invites customers to visit their local chain to load up on as much Slurpee as their given container can hold.

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The only rules? The cup must fit upright through a 10-inch hole, be food safe as well as watertight (meaning leaks are not encouraged). Other than those few stipulations, customers are encouraged to think outside the box for the promotion and document their trip under the #bringyourowncup hashtag.

This year's participant's really took it to the next level, loading up the sugary beverage in anything they could find from KFC buckets to fishtanks to water slides.

Check out the most creative, frozen trophies below: