Part of how you decide you have the best YouTube merch is through customer reviews but also based on what you're looking for and who you want to support. I love Sierra Schultzzie's Merch for its positive messages about body image, self-worth, and size-inclusive line (up to 4XL). Of course, no discussion about YouTube merch would be complete without PewDiePie Merch. The merch line takes on comic book art styles, pop art, and is very representative of the energy he brings to his content.