I did have about $2,000 from when I worked in hospitality briefly before starting our family and being a SAHM, but it's probably been eaten away in fees etc by now.
BUT. I have made plans to boost up my Super once I return to work, to make up for all of the years I would have been a SAHM. This is something I take very seriously, I don't want to be left without any/much Super, I want to be comfortable when I retire.
My plan, so far, is once I am working, hopefully in 2018 when DS3 is in full-time school and I have finished Uni, I will match my employers compulsory contribution for at least 11 years (which is the amount of time I would have been out of the workforce due to being a SAHM). This will allow me to make up the Super I missed out on over those years. If it's financially viable, I will continue to match my employers contribution until I retire.
We also have other plans on how to manage things once I'm earning. We do currently make extra payments on our mortgage, and we're thinking that if we're still able to live off DH's income once I'm working, as well as me making extra contributions to my Super, we'll put whatever else we can spare into the mortgage, and pay that off ASAP. Once that is done, whatever income we can spare, will go into either more investment properties (we currently have one), or a high interest bank account. That way, we have other money we can use upon retirement - potentially for early retirement. But, they are all just plans at the moment, nothing concrete. We'll just have to wait and see what happens!