how do you make 'magic' not a straight line?

like instead of just a brick thats long how do you make something like

http://imgur.com/a/RBYg5

if you want a straight line i know you can just spawn a brick using instance.new then size and position it but how do you make it like in the picture?

its more bricks but i dont know how you connect them and make it random

--- i appreciate every bit of help!