Spare A string? (preferably velvet or gut)

[Apprenti L'Artisan]

Hi everyone,
Does anyone have a spare A string I could have? I'm using a mix of anima-bottom and gut top (both of which I wad given) but they A string's unravelling and it's buzzing during gigs (I play out a bit outside of school). I'd prefer velvet (any type) or gut but if nothing shows up I don't mind something else.

Many thanks and I hope you all have a very merry Christmas!
God bless,
Joe