From laser pointers, to ice cream makers, all the way from the blue tooth headset. Many things on the list I agree with completely. Others not so much, like for one the blue toothhead set, it is a safe way to use your phone while driving and also accomodates for the busy mom with three kids who needs to multi task.
The laser pointer and the automated checkout services i could not agree with more. I hate them both equally even though i used to have fun making my kittens run around with the laser pointer haha.
If I could choose one thing in the whole world to uninvent, I think I would have to say that I would uninvent would have to be the tanning bed.
Yes many people, not just teenage girls, these days use the tanning bed in order to have a tanned look like they just walked off the beach. Most of these people even understand the side effects of lying in those beds.

Because there are no laws governing the use of tanning beds, people are free to use them as long and as often as they like. Keep in mind that the majority of tanning salons do have restrictions about usage but these are rules set up by the salon, not the government. Sadly, we see teenagers having restrictions on them for smoking cigarettes, which cause cancer, yet the tanning bed that has also been proven to increase the risk of cancer has no such structure. most tanning beds release very high and dangerous levels of ultraviolet radiation, which has been shown through massive testing to cause premature aging while increasing the risk of skin cancer.
These are only some reasons why tanning beds are not safe.
not to mention, tanning, causes wrinkles.