My humidor is at least a decade old, can only hold about 10 cigars and has an analogue humidity gauge that sticks, with Velcro, to the inside of the lid.
It also has a small, round, sponge-based humidifier that goes next to the humidity gauge. I used it once because, when I closed the lid, the water would drip on the cigars and have, since then, only used Boveda humidity packs.
In reality I never know whether my cigars are being kept at the right humidity, and as a result I dont keep many cigars at home. It does help that the cigar spot is 10 minutes from my home, but it also means I cant collect many cigars.