I bought a couple of these.  They looked like a handy way to keep spools of line at the ready.

They quickly became a nuisance.  If you only left a short tag end sticking out of the hole, it would retreat when you opened the container.

If you left enough so that it didn't do that, it would inevitably get pinched between something and line would get pulled out

I tried toothpicks to peg the line and that worked but then you had them snap off when moving gear around.

It got to the point where the only line I had ready to go was the 20 pound flouro I use for leaders.

As I was organizing my boat before the season starts in earnest, it hit me.  Bobber stops, one on the inside and one on the outside.  Can leave less than an inch of line protruding, but it will not pull into the box when it's opened.

The short length prevents it from getting pinched or somehow snagged.  Finally, I'm totally at peace with that item.

I was just getting ready to buy a couple myself, thanks for alerting me to the potential hassles in advance, that sounds like a handy idea.