Keep your chin up, mate. Wander around some garage sales on the weekends. I've seen a heap of bikes in garage sales around me lately that would be great singlespeed projects, or just great short-distance commuter bikes as they are.

You'll find something to replace it, and as soon as you start commuting on it again you'll be saving money.

Still curious to hear what type of locks and what it was locked to... or did you say and I missed it?