Whacky gadgets that I need the most!

I'm desperately looking for a time-machine. (Yes, obviously even I wish to live my good ol' school days, but that's not the prime reason here).

I really get irritated when people commit/do something and later on say "Mi he kelach nahi", "mi asa kaahi bolaloch/bolalech nahi". I don't understand why do people lie! Ok, I'm not claiming I do not do so, but what I'm talking about is its frequency, objective and level of that objective. Now don't ask me what time machine has got to do with all this. If I had that thing with me, I'd have used it just to bring truth forward and prove who is right and who is not.... Hey, I don't need that actually, can we have really large array of cameras, one for each person, that covers all the actvities.... Oops, now comes up the privacy issue. Are u thinking about suggesting me lie detector? Naah, it has its own limitations... So finaly, time machine seems to be reasonable bid here, provided "parallel universe theory" is not valid.