Hmm... I have a hard enough time figuring out what I want for Christmas, let alone THREE things!
Hmm...
Since this is "wishing" I suppose non-tangibles are legitimate options...
(1) Health and safety for my family and myself.
(2) A LOT of money, say a trillion dollars, tax free.
(3) Keep this wish until needed.
(Either that, or use one of the ideas above... wish to get another genie, then free the original genie... get at least 1 wish per genie that way. Problem is when you run out of genies, and no one else has a chance to get one, ever...

)