Here is a square box with a spiderwebbed window. See this post for the box without the spiderwebs.
Set the height at 8.75 inches for a box that is a 2.75 inch cube. The baby bug will cut a 1.75 inch box if you set the height at 5.5 inches. The layered file has a layer with solid lines for scoring either with reduced depth and pressure or with an upside down blade.
The download includes a layered svg for use with SCAL 2.0 and a single layer svg for use with SCAL 1. These files are for personal use only. Feel free to link to this post, but the files are not to be shared or distributed in any way.