I have a couple of black silks, wondering the best way to store them without getting creases or wrinkles. Any ideas appreciated.

At present I have them on a clothes hanger with two clamps, which I guess are normally used for pants or something.

Roll them around a cardboard tube and then cover that with a sheet of paper and a rubber band.

JNeal: wonderful, thank you.

I fold mine and put them into a ziplock bag and burp the air out. Pretty much eliminates wrinkles. For streamers I do as JNeal suggested.