My wife and I were married just over two years ago, and the marriage commisioner stumbled over my name. It just didn't want to come out. And you know what? It was a great tension breaker. I was so nervous standing up there that I couldn't think straight, and when he screwed it up, my first thought was, "Every freakin' time!" But then I found THAT thought funny, and it was a great reminder that it was, really, just another day.
Onto crafting topic: My mother made our wedding cake. Nothing too fancy, but she made it herself, and with love for my bride and me. It was more special than any store-bought, picture-perfect cake. Practice your cheesecake - you've got some time before you need it finished! Or, enlist a baking-inclined friend to make you the cake as your wedding gift. You don't need everything to be flawless to still be your perfect day.
so the price isn't as great as some of those quoted above, but Walmart has kiosks that you can bring a cd/memory card/whole camera, or an image to scan, and print off pics in front of you. It's damn handy - we use it all the time.
Knitted toques (or beanies, or whatever they are called in your area) or usually a good fashion choice for boys, regardless of weather (especially if he's into skateboarding). Fingerless gloves can be a cool choice as well. My favourite knitting book is the knitter's handy book of Patterns by Ann Budd. Simple, no frills patterns for hats, gloves (including fingerless), mittens, sweaters, and vests, in multiple sizes and gauges. Great starting points for designing your own.
If you have a chance, you might also like to read Debbie Stoller's Son of Stitch n' Bitch. Her introduction is all about knitting for guys, and as a guy, I can say that her rules and guidelines for knitting for guys is pretty much right on. Plainer is usually better, don't just blindly make something of his "favourite" colour (it might be his favourite, but not his favourite to wear).
If he's into video games, 8- and 16-bit characters transfer wonderfully to intarsia. And you pretty much cannot go wrong with skulls (no matter how overdone they are today).