Image

Sheep shearing. Public domain.
Baskets
Designs on Navajo baskets like these probably provided the inspiration for early blanket motifs. Weavers incorporated the opposing terraced (stepped) triangles into blanket weaving during the Classic (1800-1865) and Late Classic (1865-1880) periods. Crosses in several forms appear after about 1860.
Image

Sheep shearing. Public domain.