The original by agepbiz is perfect. But, there were a handy slew of us allergic to the screws requirement. This uses dowels that should snap closed just fine. If your tolerance is stupid crazy amazing you might need a dot of super glue on each peg. Most didn't need it in our group.

I tested this at a party of boys ages 9-11. One kid was able to sheer the dowel pins when they were PLA. I printed in PETG and no issues with the dowels after that. (It gave testimony to why the original decided on screws, but don't give up! Since these are a dowel style, if they break, you can put new ones in).

You'll likely have no issue with PLA, but if you have that one kid that doesn't pay attention to the pull-key being level before yanking the heck out of it, they might sheer the dowels in half when PLA. ^_^