Blue and Green...

 Well. What a selection of guesses as to the previous post's Item of Interest! My fancy hasn't been tickled like that in quite some time, let me tell you.
 One of you managed to correctly identify the item in question, but before I reveal who it was, I'd like to share my favourite fancy ticklers. So, in no particular order, the preposterous runners up are:

 Mr Peenee with "I keep thinking it has something to do with the Statue of Liberty, probably because of the color, but it seems unlikely the S of L has taken up refuge in the Castelette. Although in a world where Donald Trump runs the American government, sort of, I guess "unlikely" is a shaky concept."
 Shaky, indeed, Peenee. Especially as I discovered Lady Liberty trying to get in the catflap the other day when I got home from work. Needless to say, she was a little on the large side to squeeze through, so I shooed her out to the pond where she stands in place of one of the solar-powered garden lights (that don't work because of the lack of sunlight Britain enjoys). Turns out she just wanted a little holiday from all the "goings on" across the Pond...
 She won't keep still, though, and all her tramping around has turned the garden into a mud bath! On the plus side, she does stand in for Cromer lighthouse when the bulb needs changing.

 Jon, with: "You've managed to get a courgette? During this crisis?"
 Yuck! No! Although I did buy an iceberg lettuce for the outrageous price of £1.40 the other day!

 Hound, with: "A corner of a cover you have made for one of the alien plants in the greenhouse?"
 I'm disappointed in you, Hound, as it was you (or your comment here) that inspired this thing! But you have reminded me that I need to feed those voracious plants...

::holds nose and heaves bucket of fermenting mince out of the airing cupboard::

 So. Without further ado - or maybe a little ado as this teaser photo attests:

 
 Anyway, without further ado, may I present the winner: Princess, with

"A tissue paper lampshade perchance?..."

 The Item of Interest is indeed a small, blue, tissue paper lampshade as seen through the wobbly green glass of one of my Viresa demijohn carboy thingies.

And there you have it. Congratulations Princess!