On Sun, 28 May 2017 08:18:34 +0000, DerbyBorn wrote:

https://www.polesandblinds.com/swish...hand-bendable-
plastic-curtain-track-set-wall-or-ceiling-fix/

+1 we've used swish in our places and they are reliable IME.

Other places will probably also stock them if you wanted to run a price
comparison.