When I watch these videos where you are supposed to "do it yourself"... make something.... in the middle of that the guy mentions some product that is needed to complete the job... "oh you can get it from Walmart.."... sure dude... what's a "walmart???" 
Many people in such videos mention something so casually that we have to buy, they don't even notice it. What I am trying to say is, what other's here have mentioned... marketing is everywhere. If there is something that comes in an aerosol can or in a blister pack, that's what people go for. Making something with your hands... from scratch... who does THAT? Crazy people like us, that's who.
Other problem is, when you can get a gun for the cost of two cheeseburgers, having a slingshot is regarded as pitiful. I don't even tell people any more. They don't get it.
Many people in such videos mention something so casually that we have to buy, they don't even notice it. What I am trying to say is, what other's here have mentioned... marketing is everywhere. If there is something that comes in an aerosol can or in a blister pack, that's what people go for. Making something with your hands... from scratch... who does THAT? Crazy people like us, that's who.
Other problem is, when you can get a gun for the cost of two cheeseburgers, having a slingshot is regarded as pitiful. I don't even tell people any more. They don't get it.