* Pine wood: Pine wood is another lightweight and strong material that can be used for building a mousetrap car chassis. It is slightly heavier than balsa wood, but it is also more durable.
* Hardwood: Hardwood is a dense and strong material that can be used for building a mousetrap car chassis. It is the most durable of the three materials, but it is also the heaviest.
* Acrylic: Acrylic is a lightweight and strong plastic that can be used for building a mousetrap car chassis. It is easy to cut and shape, and it can be glued or screwed together.
* Carbon fiber: Carbon fiber is a lightweight and strong material that is often used for building high-performance racing cars. It is the most expensive of the three materials, but it is also the strongest.