Bending stair railing - GIF

[wizard69]

To some extent it depends until on the wood. Bending wood is often as much art as it is science. Classical guitar makers, actually many types of instrument makers, bend wood with what amounts to a hot iron. Moisture isn’t needed in all cases.

Doesn't look like wood. Wood would take moisture to relax it that much if even possible, not an electric blanket. Some kind of plastic? Nice bend though!

All that being said it could be plastic. Get PVC and some polypros to the right temperature and they will behave like a wet noodle. Sometimes these short clips end up frustrating people as we want to know more. I was also thinking bamboo but I’m not sure how you would keep the laminations glued together.