This September, send kids and teens back to class with a few fun picks that the Serendipity team—and their kids—love. 

1. OCS The Original Cloud Slide, $40,

2. Smythson My First Smythson, geared towards 8– to 11-year-olds, it also includes prompts, like writing your future self a letter, $275, (available September 19)

3.Hydro Flask 32-ounce wide-mouth bottle, $45,

4. Pottery Barn Kids Mackenzie pink field floral backpack in large, $64, and Mackenzie navy dino bones glow-in-the-dark backpack in mini, $45, Greenwich, CT