Your local stores should have some of these, if not they are online. They are bulky.
These are all acrylic or acrylic blends.
Patons Shetland Chunky
Patons Shetland Chunky Tweed
Bernat Softee Chunky
Bernat Softee Chunky Twists
Lion Brand Wool-ease chunky
Bernat Felting Wool
Knitpicks has some bulky yarn. Click the linked ad at the top of the page or go to the stash tab.