Polymers & elastic matls could also have a problem. As Nrchy suggests, invest in a lowly humidifier or two!
Dangers of Dryness
I just saw a thread that asks about the effects of excess humidity. Well, out here in the Southwestern Sonoran desert, we have the exact opposite extreme. Relative humidity regularly drops below 10%. Over the summer moths, we range from 5% to 30% humidity. This is one of the few places in the USA where the Heat Index is actually LOWER than the ambient temperature! I don't have a static electricity problem (good grounding) and I use a great wax on all wood surfaces. Any potential problems for audio gear operating in this "bone dry" region?