How do you make DIY throw pillows with unique textures?

[Eric.B]

I want to add some personality to my couch with DIY throw pillows but I'm tired of basic square ones. What are some creative textures and shapes I can try? I have a sewing machine but I'm not an expert. Are there any no-sew options for DIY throw pillows? What fabrics work best for different looks? I'm looking for budget-friendly DIY ideas that make a statement.