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Old 05-15-2017, 07:44 PM
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Originally Posted by Fiendish Astronaut View Post
The electronic calculator. You can get a solar powered one for a dollar and they'll last a life time giving you accurate calculations that only a few generations ago would have been hugely complicated and time consuming for a single person to perform.
A lot of the electronic devices available today—computers, TVs, tablets, smartphones, ereaders, etc.—give you so much for your money compared to what you could get for the same price thirty or twenty or ten or even five years ago. But I don't think that's the kind of thing the OP had in mind unless we're specifying a particular brand that's great value compared to its current competitors.

At one time I would have said Band-Aids, since I hadn't ever found a competing brand or generic version that stayed on nearly as well; but I don't think that's true any longer.