Found something curiously intersting today.
I went to pull up a leaf at the back of one of my N. vents to see how it's pitcher was doing and it would not budge. So I spun the plant around to have a look why, figuring it was hooked on something, and........
And the whole plant:
The funny thing is that this pitcher should have been much larger than the one it has grown in, so it is well and truly stuck!
So unlike the true babushka dolls, this'll not be pulled apart!