Do you have the same problem as I do? Balls of thread that somehow come unwound in the box they're kept in? See the top picture for the example! I've found something which may help you as well as myself!!!! I'm sure lots of you must know this already but it's taken me a mere 55 ish years to find the solution - well, an easy one that I now use.
First you'll need a dental floss threader like the blue one in the picture below. The coilless safety pin is there ready to hook it back on to when I've finished as they tend to get lost. I was given these in America but have found that you can get them online here in the UK too. I'll check locally to see if the chemists and supermarkets sell them too but that will be later today.
So, following the direction that the thread is wound in (in this case from left to right in the picture), poke your floss threader through in the same direction and a little way down the ball. See the picture below. It's really easy to do as long as you don't try and go too deep into the ball.
Take the end of your thread and push it through the floss threader 'loop'.
Pull your end through and it will stay where it is until you want to use that ball of thread again!
Don't forget to add the floss threader back on the safety pin - just in case!!!