An 18-year-old brings in $300,000 a month selling 3D printed 'reload can holders.' Here's how he comes up with unique product ideas.
"I didn't know if it was that good of an idea, but I just posted it on Instagram to see how it would do. The video went wild."
"I didn't know if it was that good of an idea, but I just posted it on Instagram to see how it would do. The video went wild."
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