Show envelope in BOM for reference

Does anyone have suggestions for having an envelope component/subassembly show up in the BOM for reference? I know by definition an envelope is to be excluded from the BOM, but I am showing it in the views and would like to be able to have it in the BOM with the qty as "reference".

My workaround would be to have separate configurations for the drawing and for the instance inserted into the top-level assembly.

SolidworksBill Of Materials