My son who was turning 4 loves spiderman so the theme was a given. We made the invitations with glitter spider webs a bug sticker. My son had a blast making them. Decoration we had made paper plate spider webs using string and spiders by tracing your hand. We hung them around and used red and black streamers. The birthday cake was a round cake decorated like a spiders web included a spider of course. We also had cupcakes spelled out his name some had stickers of spiderman. some with spider rings and one had a big 4. Cute cake easy to make. For the punch we served 7-up and cause peter parker changes into spiderman so did our punch. The ice cubes were frozen juice blue and red so when added to 7-up it would change the color. I recommend using clear cups though. For games we did the spider drop. Try dropping spiders into a cup kids had fun with that one. Test your superhero abilities raisins cooled cooked noodleskool aid powder...ect we had lots and the adults had fun playing this one also. Then we played spiderman bingo made own cards using diffrent pictures from the movie like the bad guys mary jane spider webs spiderman ect. Prizes was spiderman candy spiderman ball spiderman flashcards. The gift bags had spider rings spiderman stickers and candy plus game cards like go fish war and crazy 8. "