The humble bundle this week had a bunch of stuff that could be useful and it's $12 for all of it.
Big ones I was after are Corel Painter, Aftershot, and Particle Shop. The last two are solidly dedicated for post work, with particle shop doing pretty damn realistic particle effects. The year subscription to a VPN was just a bonus IMO.
Thought I'd pass it on. For $12, give it a try.