Living in Hawai'i can be beautiful and tricky! The tricky would be pertaining to our humidity and moisture here which can affect our equipment and hair (well, for some people)!
I use this little REUSABLE dehumidifier which I found on-line:
I store it mainly with all my hard drives and important photos!
I love that you can reuse it by recharging it with it's handy dandy electrical plug!
Like I said earlier, I ordered mine on-line. And then after I received my shipment found that also LONGS has them for sale as well!
Fortunately, this Eva-Dry could be a really good solution for your humidity issues with technology.
Unfortunately, I don't think it will do any thing for your hair if you have crazy humidity hair issues. :)