Birches don't grow around here, but we have Poplars, and the Poplar bark can be used for many things, siding is one. I have a "bag shaped" item made from such bark. It was gifted to me, I know not who made it. I'll get a pic on here sometime.
Another bark note is that Summer cut (sap up) trees shed their bark much easier than sap-down harvested trees, for what that's worth.