

A tool to convert a picture into straight lines
I am not sure what it makes with laser engraving. The results may be interesting. I think that it generated too many lines on the same spot yet.
Inkscape libraries for Makers (including laser cutting/etching)
Box Creation Tool for Laser Cutting Files
MakerCase generates box designs for laser cutters and CNC routers and outputs SVG and DXF files ready for cutting.
This is my go-to site when my projects require any type of box. You put the dimensions in and it spits out a cut file.