birkenstocks are my saviour! I have been wearing them almost constantly for a few years since my plantar fasciitis finally got better (other than the months when I it's too slippery- I have custom orthotics now for then). It took me months of physio the first time I got it (I got it from using an elliptical trainer combined with improper/cheap footwear most of the time, and also being overweight doesn't help). Then it came back because I didn't think I needed to worry about it and the second time it took many more months to treat successfully (like 6 months) and I got both the orthotics and started wearing birks and my life has been changed lol. I made it through the couch to 5k running program and then a 65lb weight gain during PG, and the pain didn't come back (for almost 3 years now).
Icing the bottom of the foot as well as rolling it over a bottle till you feel the muscles hurting/at the spot they hurt the most help a lot more than the stretches, and the strausberg sock (sp) that you sleep in did pretty much nothing for me.
on Amazon.com there are tons of cute shoes with the birkenstock flor (base)- papillion and birkies I believe are two popular brands. I get a pair or two ordered every time I visit the US because they are half the price there.