On-the-Go

We tested portable, rechargeable baby sound machines for strollers, diaper bags, and hotel rooms. Here are the ones worth packing, plus the plug-in exception.

We tested seat-back mats, seat-top caddies and a trunk diaper station to find organizers that keep wipes, bottles and snacks within reach on every drive.

We tested baby car mirrors for view width, headrest fit, and whether they hold their aim — here’s what to buy, from a budget pick to a two-car kit.