Good use for cheap thread that breaks easily

I bought a giant cone of thread from a discount fabric store for $1.  It turned out to be very brittle and breaks easily, couldn't use it in the serger at all.   But then I had to make several muslins (toiles) whatever you want to call it, mock ups is my favorite term, for a client.  And I found a use for it, it breaks easily so I just rip the pieces apart easily.  There is always a silver lining in every cloud.