What style are you looking for? Amazon has a number of robe hooks.

I'm thinking about just using a nice cabinet knob as one.

Here is a link that might be useful: Robe hook from Amazon

Chibimimi, i am just looking for something contemporary/simple. that one you linked is very nice. great idea about using cabinet knobs. thanks!

Maybe a flip hook would meet your needs.

Here is a link that might be useful: flip hook

annie, the flip hook is a cool design. but probably too wide for my small pony wall. but seems like something useful for our entry hall. the umbra site you linked is very interesting too. i like the little excerpts about the designer of each product. thanks!