I've just recieved an invite for a "curry bowl extravaganza" in which everyone is to bring an interesting vegetable to make curry. What's the most interesting vegetable you've added to curry that was surprisingly delicious? I'm pretty sure I could bring spices and such as well. Failing that, what is a conventional standby that is likely to be forgotten? I really don't have much experience with curry so I'd appreciate any suggestions. Thanks!