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Amazon's Prime Day sales event kicks off at the end of the month (June 23-26), and it's a great time to save on big-brand names like Apple, Samsung, LG, and more. However, it's also a good time to snag lesser-known gadgets for even cheaper.

Also: I found 15 Amazon deals on editor-approved tech already live for Prime Day

Our editors at ZDNET test useful gadgets and gizmos to make your life better all year long. We've rounded up the best deals under $25 on helpful items that won't break the bank, from power banks to security cameras.