www.purple-heart.com/baking-cake-cups-wrappers.irc?cName=baking-cake-cups-wrappers&pg=1
the link above takes you too cupcake cases & matching cupcake flags.... I used these for 1 of DDs birthdays, though that was a small get together
you can get plain card 3 tier cake stands quite easily, for another Childs Party Cake order, I painted 1 black & added a skull & bones at the top, & filled with various Pirate cupcakes.....saves you cutting up to dish out to the kids or for party bags too
The same company also has napkins, plates & party bags & favours, all in a pirate theme
You might want to skip filling the party bags though in favour of making a treasure chest shaped "Pinata" ......wire & thin cane frame, covered with layered of paper & glue to make up into paper mache' about 4/5 layers should do it....
though remember to leave a hole....fill with sweets & pirate balloons bubble bottles etc etc, & then close the hole with more paper & glue layers.....make sure you have secure handle to suspend it from a beam or similar at the venue & then paint to look like a treasure chest :)
hang it up in the venue & give them all an empty party bag & let the little Pirates queue up & bash it with their swords until it splits & then they can have a mad scramble to fill their own party bags, we did this with another themed party of DDs & it went down a treat, & saves you the job of filing the bags & doubles up as a party game :)
We also filled a bit of net with with balloons & suspend it from the ceiling.....make a split in the middle, which iss tied up with ribbon, so that the ribbon could be pulled & the balloons then all fall on the kids.....we let the balloons go after singing happy birthday & doing the candles.....makes for great photos & the kids go mental for it & it becomes a pop the balloon game.....you could use a mix of pirate, & black, green etc & seaweed streamers, cheap plastic fish etc etc
Also the old sword cocktail sticks are good, for cheese, sausages etc