Materials options:
PLA - Versatile, most common, low cost, low warp, hard / brittle, low melting point, biodegradable.
PETG - Higher strength, impact resistant, low warp. PET is used to manufacture water bottles.
ABS - Higher strength, higher temperature, durable, impact resistant, engineering plastic.
TPU - Flexible, soft, shock and vibration absorbing, warps but flexible shape, lower precision.