Oh yeah, I have a mile of old power adapters as well, most of them will probably never get used, but I keep them simply because they might come in handy some day. In addition to that I also have miles upon miles of old cables for various things (most likely enough to stretch from here to Sydney and back) that I've collected over the years.

As for the StyleWriter II, I had a look at the service manual before, and whats interesting is that it seems that Apple didn't even want AASPs to swap out PSUs on them, rather they seemed to prefer they simply replace the entire printer instead. I can't understand why, its a simple enough procedure.