With a cute gimmick to hook customers and so cheap / low stakes that people will toss a few bucks into it for fun and not think too hard about it. It's like the chocolate bars and other items at the cashier of a supermarket, works entirely off of impulse purchases. The problem for OP is that they aren't physically in front of hundreds of potential customers wandering by. They're on the internet so they need to go viral like the bag of dicks guy or do stuff like blog about it and get posted places like hn.