So, someone posted a 60 gallon rimless cube on a local facebook group. He sold it to me for $85. I decided it might be fun to play around with. I suspect I may end up putting it in the nook that my current biocube holds - it seems to be the perfect size to fill up the spot. If not, perhaps it will be a QT tank or something one day. It doesn't seem to be tempered, so I may just use it to experiment with drilling a hole. The pictures are below.
On a side note. My son has decided that this will be his new tank and the biocube can be mine now. I am also officially the best mom he can ever imagine. At least I have a partner in crime!