craftgrrl | Grid Thingy To Make Rug Out Of

Hello! I'm a lurker, I've been around here for a few years .... *creepy-stalks community*

Sorry I don't have any interesting pictures (next post, promise!), but I really want to make some nifty rugs out of strips of T-shirt material. I have a hooker to do this with, problem is, I can't seem to find the grid thingy that one would hook the fabric scraps through. You know, the same grid someone would hook yarn through in the process of making a rug? I can't seem to find them anywhere. Am I just blind, or have bad luck? Or are they really hidden in the deep dark depths of Michael's somewhere?

Thanks for any help/suggestions you may have. :)

Edit: Alright, I have figured out what I will do. Thanks all for the replies. I will post the rugs (and my entire redone bathroom) when they are done! :)