[AdamJoshua]

A lot of people will use a food safe silicone and stick a analog hygro to the top of the jar, mainly because it looks impressive, but suppose it does provide function as well.

I'm by no means an expert but in a jar such as that, not sure if you need any kind of humi-pak in it if you keep it sealed and your sticks are already at your preferred RH, sort of like putting cigars in a ziplock baggy, as long as you aren't opening it all the time it should be fine.

That being said if you have enough height in the jar you could create some small cedar platform on the bottom, with a tiny bit of space under it and put a humi-pak under that (maybe drill a few small holes in the base), you would then have a level even base for your sicks to rest on and the humi-pak wouldn't be 'in the way', again that would look cool and be pretty badass as well.