We had a Pirate Party for my son's seventh birthday. I found some clipart of a pirate with a ship in the background and used that on the invitations.  The invitations were printed on paper that looked like a scroll. My husband cut swords out of plywood and we painted the handles black and the blade silver.  Each child received a sword when they got to the party and I painted black mustaches on those that wanted them. Decorations were a black tablecloth with gold plates and cups, and shiny pennies scattered on the tablecloth. I also decorated a large Little Tikes climbing toy to look like a Pirate ship, complete with Skull and Crossbones flag. The kids loved climbing up on this with their swords and pretending they were the Captain!  The activities included treasure chest decorating (I got mug boxes from some florists and spray painted them gold -we had sequins, glitter, foam cutouts, etc. to decorate their gold boxes - they also decorated their swords).  Other activities were a "Feed the Alligator" bean bag toss game (I painted an alligator face on a piece of foam board and cut a big hole where the mouth is, bean bags were toddler socks filled with rice), Walk the Plank (two pieces of 2 x 6 boards lined up end to end on cinder blocks - the kids walked across blindfolded and also had many sword battles on these planks!), Pin the X on the Treasure Map (ordered from Birthday Express.com), Cannonball Toss (black water balloons), Dig for Gold Nuggets (spraypainted small rocks gold and scattered them throughout the sandbox), and finally a Treasure Hunt. We have many trees in our backyard, so the Hunt centered around these trees. The answers to the clues were either letters, numbers or colors (i.e. One plus one will always be two, but three plus three is the next clue for you - kids would find the number "6" posted on a tree).  The final clue led them to a treasure chest filled with paper pirate hats, eye patches (I made these out of black foamee paper and elastic), gold chocolate coins, gold play coins, candy necklaces, etc. They filled up their decorated treasure chests with this "treasure", along with any "gold nuggets" they had found in the sandbox.  I made a Treasure Chest cake - found the decorating idea on Birthday Express.com. Instead of a loaf cake, I found it easier to make two sheet cakes and layer them to look like an open Treasure Chest.  My son had requested vanilla pudding in the middle which worked out fine. Coins and candy necklaces were decorating the outside of the Treasure Chest.   Lastly, we opened presents which were kept in a large empty box, spray painted gold and marked "Colton's Treasure". This party was a lot of hard work, but definitely worth it.  The kids had a blast!