There are a variety of plastic-based materials that can serve various purposes, each available in a variety of colors.
The colors available are shown below
In some cases, conductive, magnetic or metal-filled material may be useful. These alternatives exist!
Strength: capacity of the object to withstand force / pressure
Stiffness: the extent to which the object resists deformation
Durability: the resistance of the object over time
Max. temperature: the temperature above which the object starts to deform (≠ melt)
Density: mass of the material per unit volume
Price: approximate cost per kg in 2020
Printability: how well the material prints, how precise and how close to the original design