My thermos flask is fine, but the cap is broken (as shown in picture). Usually its the other way round and the thermos breaks (e.g. when dropped) or the vacuum fails and I guess most people would throw it out together with the cap. I was just hoping that someone might have kept an old thermos cap for whatever reason ! I tried gluing back together, but it came apart again.
Another alternative is I give away the Thermos, if someone has a suitable cap....