I noticed this white casing attached with silken threads to a grass stalk on the edge of our long grass yesterday morning.
I have just posted these pictures on iSpot, but have no idea whether this is the pupa of a moth, the egg sac of a spider or whether it might belong to a parasitic wasp of some kind. It is about 0.7 cm in length and about 20 cm off the ground. Perhaps the bands are a clue to its ID. Do let me know if you recognise it!