I personally have seen too many Twilight Zone episodes and read too many books involving badly phrased and destructive wishes. I only had three (1 selfish, 1 semi-useful, 1 defensive)...

a) Financial. I wish that any time I need to pay for anything that I can reach into whatever pocket or pack I have at the time and pull out the amount in cash (exact change and the appropriate currency) for that purchase for as long as I live. [This way, I avoid tax worries, theft worries, but still live and travel comfortably without having to worry about working for the rest of my life.]

b) Altruistic. I wish I had the power that once a day I could deliberately (not accidentally) touch anyone (including myself, if necessary) and heal whatever sickness they might have for as long as I live. [Doing a little good along the way, hopefully, or if I choose or need to heal an injury.]

c) I wish the box destroyed, so that other people would not do harm with it. [This thing is dangerous!!!]