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Small Sand Timer - 3 min — Nature's Workshop Plus
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4imprint.co.uk: Hourglass Sand Timer 504032
Amazon.com: Teacher Created Resources Mini Sand Timers Combo 4-Pack,Red, Blue, Yellow, Green : Everything Else
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60 Minute Hand Blown Sand Timer on Crystal Base - 6 colors - JustHourglasses
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Large Sand Timer - Educational Colours
Large Sand Timer- 3 Minute – Smart Kids
