Here's a few images I made previously that I've re-processed with iPad apps such as Glaze, BrushStroke, ToonCamera, Mobile Monet HD and Waterlogue. I see that Topaz Labs have a couple of new plug-ins called Impression and Glow, but damn, you can get some really nice results with apps that are a dollar or two.
Plus, there's something very appealing about just sitting on the couch and working on image post-processing! :)
Cheers, and I hope you enjoy!