This is nice idea but you need to take time to build this machine this only happens on movie's and if you were giving a chance to build a timemachine that can bring the past back like project almanac let me in ^_^ lets come to reality for me i will share to you on how to get rich you need to learn work hard becoming rich is not that easy way learn forex trading you can be rich (fast money) also in gambling site ^_^ earn more and stop spending too much money in nonsense way 
in fact some people in 1999 building time machine, more milliar dollat used to build it but no people can use it, and fail
i think movie like doraemon make people thinking we can comeback to past or future