Here’s a simple laser-cut acrylic phone stand with public domain art engraved on it - you can make one just like this with the attached files or you can find your own art to engrave.
The pattern and the engraving should work just as well with 1/8" (3mm) plywood.
This pattern is made to use ⅛” (3mm) acrylic, but can be adjusted for other thicknesses. If your acrylic is a little too thick or too thin for this pattern, you can either scale the pattern in your laser software or adjust the individual slots in a program like Adobe Illustrator.
If you want to use the Hokusai ‘Great Wave’ artwork, download both the Illustrator file (or the PDF or the EPS) and the four JPEGs here. If you want to use a pattern from a Kuba cloth, download the Illustrator (or the PDF or the EPS) file here and get the images that are attached to Step 2.