Insurance is a no-go. Before leaving (and after getting as much glass out of the car as possible), I went back to the office I had been working at, grabbed a few transparent garbage bags and an entire new roll of packing tape then made myself a nice, new window! It now matches vast areas at the front of the car so there's at least a consistent theme...
My estimate is about $300 worth of stuff stolen. It will be more of a hassle to get everything again and all of my time wasted.
The plan is still to drive this box of rocks until it dies (or I have enough after my tax refund to get something better). I think my replacement window is actually stronger than the original so they'll probably choose to break a different one next time...