I love the spools that Superior thread has where you can tuck the end of the thread in and lock it down. But if you are using a thread that doesn't have that system, there are "thread socks" --kind of a plastic mesh that you can cut into various lengths depending on the size of your spool. I use those on threads that like to unravel easily. I also have a case that was designed for screws and nails etc. in the work shop. It has five trays, three large ones and two smaller ones. My thread that is stored in there does not unravel nearly as quickly as that that I have stored in the open because nothing is brushing against it and it is not rolling around anywhere. Ann is sunny, hot Texas.
Nikki, depending on the type thread you are using, there may a way to lock the thread on the end of the spool. Check your Superior thread spools like King Tut, Bottom Line, Razzle Dazzle and MasterPiece. The end caps on them will snap off and you can lay the end of your thread over it and snap the end cap back on to hold it in place. Some of the other threads like Mettler have a place at one end of the spool to just slide your thread into. I wish all manufacturers would do stuff like that!
It's Not What You Gather, But What You Scatter
That Tells What Kind Of Life You Have Lived !