Have we told you lately that we’re obsessed with Shark Tank? Well, we are, and we love seeing where the alums end up — like Surprise Ride. This company curates monthly subscription boxes for kids ages 6-11 that are educational and fun. Each box contains a themed set of projects, a snack and some fun surprises, as well as a guide to help parents and kids learn more together.

Their Mars-themed box included an experiment with sand that behaves like Martian soil, instructions for Martian magnet art and astronaut ice cream (among other things). And their Birdsville box included the materials to build a birdhouse and a guide to the basics of birdwatching (real binoculars, too).

We love how the themes are always fresh and unexpected, and parents around the blogosphere seem to agree that it’s a fun way to explore as a family.

If you have any elementary school-aged kids on your holiday shopping list, click over and consider those names checked off.

Do you subscribe to any monthly boxes? Which ones? Let us know in the comments below.