Ohmigosh, huge thanks to everyone who recommended fleece-lined Crocs. I've had different Crocs in the past but find it hard to find the right fit... today I discovered (while picking up glasses at the mall) that there's a new Croc's retail store there... AND they were having crazy sales!
I was rummaging through the racks as the clerk came buy and asked if I was finding my size OK... "I think so... YES!" said I, slipping into a pair of unisex WM9 fleecy clogs. My feet immediately relaxed and started thanking all the VFers for their excellent advice. I seriously think these are the most comfortable shoes I've ever had on in my life. (For $23, no less!)
...I'm not sure I can bear to leave the house in them (they do have a distinct aesthetic deficit, alas
), but that's OK. I work from home anyway!
(And for the days I absolutely
have to go out, I also bought a pair of their more mainstream, Dansko-esque leather clogs--normally $70--for $14!!)