My elderly mom may at some time have to come live with me. I am redoing my kitchen now, and trying to keep her in mind. Can some one help -- if she likes tea, what is the safest mechanism to have in kitchen? Instant hot water maker (can be too hot)? Stove (she can leave pot on)? Microwave -- high up, but I could get a small one and put on counter and just move when we have company? Electric tea kettle? Many thanks.