I have some addons you can put in...
-Clothing: It's a crown, made out of 7 gold, it's like a normal helmet, except add 2 gold ingots to each side at the top, to make it a crown, has a longer durability than a helmet, and you can put a diamond inbetween the two gold ingots to make it have jewels, that'll make it, just about the same durability as a diamond helmet...
-Block: It's like a piston, with a bit more detail, and can make your vehicle creations move, such as boats to go fishing, pirate ships, planes, space shuttles, etc...Just make it so that every block around it is attached to the blocks that touch the motor...Name [Motor]