All these products have been carefully reviewed by me. I only recommend products that I would use myself and recommend to my friends. Editorial reviews are separate and distinct from advertising on DeliciousBaby.com, and we never accept "advertorial" or pay-for-positive reviews. I do earn a small commission if you purchase a product on Amazon after clicking through from my site, and those sales help pay for the time it takes me to conduct and write thorough reviews.
It's worth noting that Patagonia makes a baby sized set of long underwear. These are a big investment, but when you're not in the snow, they make great PJs, and I also like to pack them as an extra set of clothing for air travel since it packs up so and dries quickly if there is a spill.
Reading stories set in the snow can be a fun way to set the scene for your trip before you go, and a rich way to remember it after you return.
Experts recommend that you keep a snow shovel in your trunk during winter months in case you need to dig your wheels out of the snow. I like and use this lightweight, collapsible snow shovel. It's sturdy, but doesn't take up much space and is inexpensive.
Each of our kids packs one set of long underwear (a bottom and a top) when we head to the snow. In a pinch, it can be washed out at night and dry by morning. My son thinks many of the popular brands of long underwear are itchy, so we stick with Patagonia's Capeline 3 long underwear, but Lands End and REI also make quality long underwear.
If you spend a lot of time in the snow, you'll want to invest in a proper pair of snow boots, but if you're planning to take 1-2 trips to the snow in a year, a pair of rainboots coupled with two layers of warm socks will work just fine. After trying lots of different brands, we've found that Hatley gives us the best bang for the buck, and we like that Hatley boots are lead-free.
It's worth noting that rainboots often don't stay on feet under about size 7, so if you have a toddler, you'll be better off investing in snow boots.
Having invested in and tried many different socks over the years, for winter sports we invest in two pairs of Smartwool brand socks for each child (the wintersport or crew socks are a nice weight and length). They're more expensive than some brands, but they're nicely padded, breath well, wear well (we get multiple seasons out of each pair) and dry up quickly. If your child's feet get cold, a lightweight liner sock works well underneath.