Well...it's not simple, but you could write a script that would traverse the objects you want to export, then write SVG based on those objects. SVG is XML, so it's just text, and scripts are great at writing text files. The way that paths, path points, etc., are specified in SVG is quite similar to the way they're constructed in InDesign.
It's a solution. Whether it's a practical solution or not depends on you and your needs, and also on the complexity of the objects you need to export.