7 great last-minute tech gifts that cost less than $20

OK, you've already bought your big-ticket items for the holidays, but what about your coworkers, the mailman, and everyone else on your list who you care about enough to not just fall back on a gift card, but can't afford to splurge on?
You need cheap gift ideas, and we've got 'em. There are a bunch of affordable tech products out there that everyone wants (or at least could use), and they're not even aware of it. 
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As such,