Who: Teona and Carl Bate.
The Idea: Justine Bate, from Manchester, made the masks to help herself and her daughter, Teona, 10, as they are both deaf.
How: Justine Bate originally made the masks, which feature a plastic window over the mouth, to help understand the deaf people.
Sales: They sold 42 on the morning of May 27 for £5.99 each, including postage and packaging.
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