Personally I'd advice against gambling overall (ye I know I wear a gambling signature at the moment!) but if someone insists on playing something without thinking or using skills, then why not buy a random stock? That'd give them 50% chance to win and with some research they could increase this chance.
I found this nice video a day ago, it tells the truth about lotteries in a funny way: https://www.youtube.com/watch?v=9PSWTDhHGt4
A very good point is made at 2:55 about the probabilities
Also at 4:07 they lottery in comparison with gambling and stock market in a funny way... "we take away all the skill of blackjack or poker just to make sure we have the best chance of getting your money"!
Lottery is the game that can bring high profits that would be life changing.
Of course the possibility of winning is the least of any other gambling game, yet people believe that they are going to be the winners and they prefer lottery over other gambling games with lower profit margin.