My nephew's party is on Halloween and here is the menu my sister decided on:
Nachos- one with just Velveeta for the non meat eaters and one with rotel, and hamburger meat, and tositos scoops.
Punch- Orange sherbet with orange slices and lime slices with 7up
Frito pie- wolf brand chili, fritos scoops, and shredded cheese
veggie tray with ranch dip (1 16 ounce of sourcream and ranch dressing/dip packet)
I would definatley go for cupcake cake. These are so easy and you do not need a knife or plates.. Cupcake and a napkin..
We are also making the ready bake pumpkin sugar cookies for the little kids who want to decorate them.
As for activities.. what about put Scary musical chairs, you play like scary kiddie music and the winner gets a prize!
Candy Corn Bingo- You can buy a cheap bingo game or download paper forms online.. The kids can use candy corn for their chips.. they will eat some while playing but hey its a party, why not..
Also I went to a party last year with my daughter and the played the freeze game. You play music and then when they stop you have to freeze. Anyone moving after you stop the music has to sit down. Last one won a goodie bag.
They had a costume contest but had lots of winners like:
Best Fairy,
Best Wig,
Best Pirate
Best cheerleader
And I guess this just gave the kids more of a chance to win instead of having just one best costume.
Hope this helps and you all have a blast.