See the following story from Australia:
https://www.cnet.com/news/bitcoin-boost-australia-cryptocurrency-competition-boost/Australian juice company Boost is giving away four bitcoins -- one a week, for four weeks -- to those who buy some juice and enter a code in the Boost app.
In the past, these marketing camapigns would feature a holiday they were giving away if your bought the product and entered the codes. Now it's bitcoin.
Hahaha this is such a epic trick, offer people the carrot and people will fall for it. Isn't it obvious the code shall never be out, whoever shall get it shall be one of the person closest, and one Bitcoin may be given to random person to keep it up. I yet can't believe people fall for such gimmicks and it's fun and sad they're using Bitcoins for this, though they're promoting it to lol.