Paul Smith made these Classic Mac OS System 1 Patterns, which are super tiny (in size) graphics that work with background-repeat to make old school “textures”. They have an awfully nostalgic look for me, but they are so simple I can see them being useful in modern designs as well.

had a tiny play with blending it. https://codepen.io/editor/chriscoyier/pen/019aae4b-8692-786e-b445-7a45b5b3ca74