Free solar system lacing cards you can print and make yourself. This set features all eight planets as well as the sun and moon. This is a great fine motor activity for young kids who are learning about space! Would go well with Star Seeker.
Printable lacing cards are great for plane trips. Use shoe laces and bright motifs on laminated card, like these Car Lacing Cards from Busy Little Bugs. These don't need a tray so are great for takeoff or landing.