Thankfully my 'fantastic contraption' addiction has abated.
I can waste lots of time in Wikipedia, going from one topic to another. But I don't think of it as wasting time, since you can learn all kinds of stuff (assuming it's not BS that somebody made up).
I've been spending most of my free time working on my new investing website... Generation Y Investor ... It's a work in progress. But I also spend a lot of time on ebay and beeradvocate as well. Of course HBT is my favorite though!