We decided to use stuff that we already had on hand and make up our own costumes rather than going out and buying new ones this year.
So, my 10 year old DS wore his two year old Spiderman costume. Now, it must have been about 4 inches too short on him but we came up with a solution for that. He decided to go as Peter Parker with Spiderman in disguise.
Oops, even Spiderman blinks sometimes!
My 7 year old DD decided to be a fairy using a little play dress over a matching outfit.
Here they are together. Spiderman is trying to look cool.