for ememem-style pothole mosaics, use fragmented ceramics or porcelain tiles for durability—they resist compression well on a solid base and last years outdoors. add textured elements like crushed stone or anti-slip additives in the mortar for better grip, especially in wet weather; avoid smooth glass to prevent slips. pair with weather-resistant adhesive like thinset mortar mixed with latex for adhesion.
the guardian
colossal
https://www.thisiscolossal.com/2021/05/ememem-street-mosaics/