Reddit reviews Minecraft: Essential Handbook

https://www.amazon.com/Minecraft-Essential-Handbook-Official-Mojang/dp/0545669936

Download the music from the game records and play it while the kids are eating and hanging out.

Make your best attempt at a Desert Temple cake.
http://media-mcw.cursecdn.com/thumb/f/f9/2012-06-22_18.02.26.png/400px-2012-06-22_18.02.26.png

Set up a small LAN where the kids can play the game itself and introduce their friends to it. This is a good "cool down" activity after cake/presents/etc.

Print out block textures, and use those as wrapping paper.

Give some books like these as gifts
http://www.amazon.com/Minecraft-Redstone-Handbook-Official-Mojang/dp/054568515X/

http://www.amazon.com/Minecraft-Essential-Handbook-Official-Mojang/dp/0545669936/

or just have them around at the party for kids to look through.

For an activity how about some minecraft papercraft?
http://pixelpapercraft.com/

Maybe get some minecraft themed food for all to enjoy.

Cake, cookies, bread, steak, potatoes, milk, mushroom stew, quite a few options.

http://minecraft.gamepedia.com/Food

No, they exist.

Changed each and every password 'cause Momma didn't raise no fool.

My son has really been wanting this Minecraft book!

there are many tutorials on youtube but i recommend the essential handbook by mojang themselves. although it is outdated, it will help you with the basics https://w ww.amazon.com/Minecraft-Essential-Handbook-Official-Mojang/dp/0545669936 here is the link for it on amazon. become an epic gamer!

-Marcus