Now your thinking 82
The wife came across some wooden needle cases like the ones you've pictured - they are longer than most wooden cases I've seen (about 3 1/2 to 4").
What I like about them is that they hold just the right amount of bp that I use in my 62 cal. Some I use for powder, some for shot - takes up less room in my pouch. One thing I would suggest - mark the tops to match the bottoms as far as tightness. Then pick up some "candle stick" (used to put on the bottom of a candle to hold it in place) - it's a sticky waxey substance found is round tins.
Put a dab on the top collar - it helps keep the cap on.
hope this helps, Wart