Like Otomi but can't handle the price tag?
Corinne at Threadbanger posted a DIY video where she freehanded the design with markers on fabric and then filled in with paint.
If you're not that talented, Lena Corwin posted free Otomi stencils on Etsy awhile ago.
If you're not that talented either, you can print your stencils on large adhesive stickers as seen at Tatertots and Jello and use screenprinting paint.
If you're not that talented either, you could support indigenous culture and just buy one.