As everyone should know, Minecraft 1.8 came out a while ago. We also know that they came out with Armor Stands. You might think they are just stuff that you can put your armor on. Pretty cool, but Armor Stands have a lot more potential to them... I will show you how to do cooler things with it... A LOT MORE COOLER STUFF! :D


One thing you need to know, is that Armor Stands are entities, so they can be summoned using a command:
/summon ArmorStand ~ ~ ~

But you can do many other things using the new /entitydata command. Here is a list: 
Giving the Armor Stand Arms: /entitydata @e[type=ArmorStand] {ShowArms:1}
Turn the Armor Stand tiny: /entitydata @e[type=ArmorStand] {Small:1}
Turn the Armor Stand Invisible: /entitydata @e[type=ArmorStand] {Invisible:1}
Turn the Armor Stand's gravity off: /entitydata @e[type=ArmorStand] {NoGravity:1}
Take out the Baseplate of the Armor Stand: /entitydata @e[type=ArmorStand] {NoBasePlate:1}

Using these traits of the Armor Stand, you can create Amazing creations, but One of the coolest things you can do with them is animate their various parts!
You Can make this happen by doing the command: /entitydata @e[type=ArmorStand] {Pose:{"BODY_PART":[0f,0f,0f]}}
The underlined part, 0f,0f,0f, Is the part where you choose it's angle in degrees ( It sounds complicated, but it is very simple ).
In the place of the 0, is where you would put your degrees angle ( -360 - 360 ). Now, one of the coolest things you can do with Armor Stands is 3D props! 
In order to do this, you will need to follow these steps and commands:
1. Put down an Armor Stand, and do the command: /entitydata @e[type=ArmorStand] {ShowArms:1}
2. Put your object in the Armor Stand's hand.
3. Position the Armor Stand so it is where you want it to be.
4. Do the command /entitydata @e[type=ArmorStand] {Invisible:1}
RESULT: It should end up the way you wanted the prop to be positioned.

Now, you cannot see the Armor Stand, but only the prop! But if you go into spectator mode, you will be able to see it transparent.

That is most of the cool things that you can do with an Armor Stand, but if I didn't help you, please check out videos on youtube on how to do it. Thank you for your time! :D