from a simple hem/button change/ sleeve removal or change all the way to totally changing the structure of the garment or even repurposing the fabric for something different. (Pillows, patches, etc.)
I sometimes buy from the rag pile at thrift stores just for the buttons. They definitely have more character.
A few blogs that are very popular right now with clothing are http://www.newdressaday.com/ http://refashionista.net/ and http://refashionco-op.blogspot.com/
All the blogs have links to others, which means you can get hooked for hours on end.
Some are creative, some are simple, and some are just meh. I think that every one of them has at least the occasional good idea, with some better than others.
(As a side, I've noticed something over the past couple of years that I find really interesting. Young Mormon wives are running fashion blogs which tend to be about what they've thrifted and refashioned from thrift stores, garage sales, charity shops, even laundry room bins. I point out Mormon because most do make mention of their faith. Either way, it's very interesting that this is becoming the "in" thing right now.)
= new reply since forum marked as read