Squaring up 1/2 square triangles...

Making a Halloween quilt  - this is the tedious step of squaring up 1/2 square triangles - only have 64 to do and am 2/3rds of the way done - woo hoo!
Here is the quilt pattern that I am using...
http://www.rileyblakedesigns.com/media/uploads/Free_Quilting_Projects/2012/RBD_YellowMazeFQ.pdf