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Moreover, a free add-on for the device will spot and warn of traffic cameras along your route, and in plenty of time to avoid those red-light “souvenirs” that are all the rage in the District and Montgomery County.

Until now, a device such as the TomTom would cost double or triple the price. For now, it’s available at a reasonable cost, which is why someone on our Christmas list will receive one. You might want to gift yourself, too.

• What’s in your stocking? E-mail Mark Kellner.