Nature walk. Activities don't have to be complicated. Find a local trail or even just walk around the block, pointing out types of trees, animals, and flowers as you go (make sure to smell those flowers).
Plant a garden. Whether you're growing food you'll eat during the summer or pretty flowers, planting a garden is a great way to get your hands dirty together. It also creates a bonus activity: checking on the garden's progress throughout the growing season.
Water play. Splish, splash. You don't have to have a pool to engage in water play. A water table, like the Step2 Rain Showers Splash Pond Water Table ($90), is a warm-weather staple for many families.
Play ball. Soccer is a popular first sport for tiny tots and is about to take center stage during the World Cup. Keep it fun as you give your toddler something they can kick in the backyard. This Little Tikes Easy Score Soccer Set Game ($40) comes with a small ball, net, and pump.
Head out for a run. Work out while your child is contained and enjoying the outdoors (or napping). Jogging strollers ensure parents get physical activity aside from chasing around their little ones.
Bubbles. In not-so-breaking news, little kids love bubbles. Consider getting a bubble machine (or dolphin) like the Kidzlane Bubble Maker Machine ($25).
Balance bike. An alternative to pedal bikes, balance bikes require a child to move the bike with their feet and teach body awareness. (USA Cycling says they're a valid way to start a kid on a bike).
UPick. Picking season isn't just for apples and pumpkins these days. Tulips are big in the spring, and sunflowers, berries, and peaches come in season in the winter. Check to see what your area offers.
Holiday home tours. You don't have to live in a big city with local attractions or head to a local museum to find fun things to do. Sometimes, the coolest sights come courtesy of your neighbors. From winter holiday lights to patriotic 4th of July setups, make a habit of celebratory adventures throughout your 'hood (even when it means bundling up).