Depending on the desired look, strength, durability and mechanical properties you have to choose between a broad range of materials.

Wood and Woodfibers

Softwoods
Hardwoods
Plywood/Multiplex
MDF
OSB

Plastic

PLA
PETG
PA (Nylon)
POM (Delron)
TPU

Metals

Aluminium
Steel
Stainless Steel
Brass

Composites

HPL
Glass fiber (FR4)
Carbon