I think I spent more time googling graphics for the cupcake picks and then fixing them in Photoshop so I could print them out.
I knew about this one a month out so I had time to search for stuff. At the .99 store I got candy necklaces, skull lollipops & the pirate candles. I got the pirate cupcake wrappers at Asda & the gold coins at Sainsbury's. The coins are white chocolate buttons sprayed with my gold spray (also from the .99 store, I love that place, it's £2.97 elsewhere).
I used (soft) gold dragees (also on offer for .99 at Aldi) for the studs on the chest and some weird blackjack aniseed taffy thing for the lock & hasp, which I sprayed gold. It faded which added to the effect.
Happy birthday girl & happy kids!