I've replaced my iPad Air with an Air2 so the old one won't be much in use. Apart from keeping it charged and other common sense things (it has battery problems) is there anything else I should be doing with it?
Don't leave it plugged in 24/7 Charge it to 100% (plus a couple of hours for good luck) - then let it subside down to 10% or so & then recharge again. Occasionally update all the apps - otherwise, if you do happen to need it, something may not work.
I want to keep it because maybe hubby will show interest some day so he can play with it before buying it, then I'll give it to one of the grandchildren.