Today's SBQ is:

When you stitch from a kit and use the supplied floss do you have
leftovers? If so, how much and what do you do with them? If not, do
you usually have just enough or do you have to dig into your stash to
finish?

I have had leftovers from pretty small kits and by not knowing the "real number" (if any), or having much anyways I just toss it.
Running out? Ah yes, Ariel. I have run out before- and it was a not-so-good place to run out as it was her hair, a very dominate place to notice off colors. I managed to find a somewhat match and finish her after a trip to the craft store just for it! But I am still not too pleased with it as it was a large area and if you look close, you can tell. As the sheen is different as well.