Although I don't even recall the last time I've used an eraser, let alone needed one, the Pebble Eraser seems like a good one to have on hand. Also, just because I haven't needed one, doesn't mean it's not used profusely in other industries. I just happen to write predominantly on my laptop nowadays.
Designed by Ching-Chan Wang and Ya-Ting Yang, the Pebble Eraser is not only interesting to look at, its look serves a purpose. As it erodes, it maintains its sharp edges, which proves useful when erasing certain marks.
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25 Office Supply Creations
21 Revolutionary Post-It Notes
Anatomically Correct Stationery
Chic & Naughty Stationary