Conoeca guildingi has a conical case, but I am not sure if it adds extra items to the case. But we should propagate this species, whatever it is, to gather up microplastic pollution for us. Any chance of a photo of the beastie inside?
I think it'd be a step to a cleaner world Don :) No I'm sorry - most of my shots are historical at the moment and this was 7 yrs ago - I haven't seen it since... The extra pieces attached are unusual.