Laser engraving can be applied to
acrylic, wood, and metal products.
Acrylic products are often
edge-lit with led strips.
Signs and decorative art pieces
are a great use for this.

High grade plywood is a good
candidate for 2D laser engraving.
The image below shows an example of this.

3D Laser Engraving is shown below.
Solid woods are the best materials for this.
This level of detail is rarely seen.