Unusual wind instrument...

... or bold architectural feature?

I have been carting my many declutters to charity shops in a robust, book-sized hessian bag, emptying it out then bringing it home for a refill. When I got home today it was missing. I contemplated contacting the Syrian café where I met my daughter for a late lunch and where I almost certainly left it under the table, then realised I was very pleased to be uncluttered of a bag that had written on it, in a series of mismatched typefaces, 'I'm A Very Useful Bag for Carrying Very Useful Things'. You might recall how much I hate anthropomorphism in inanimate objects. Good riddance.

By the time we finished lunch it was dark hence these barley-sugar columns.