We’re already seeing a bunch of STEM toys pop up in the days leading up to Toy Fair 2018, and WobbleWorks, makers of the 3D-printing pen 3Doodler, is throwing its hat into the ring. The company is launching the 3Doodler Start STEM series kits, which includes a range of activity kits that let you build robotic dinosaurs and make your own skeleton figurines.

3Doodler has also partnered with robotic insect toy company Hexbugs to launch a “Make Your Own Hexbug” set, which lets kids draw insect body parts and legs on a custom DoodleMold. The little motor inside the completed Hexbug lets the robotic insects hop and scurry across, which kids can put inside mazes or race against their friends.

The kits are meant to be used to teach kids about spatial reasoning and structural design using the 3Doodler Start, a smaller, child-friendly version of the original 3Doodler pen. 3Doodler also has a Pro version for adults, which uses plastic filaments embedded with specks of wood, copper and bronze.

The Hexbug pen set and activity kit will be available in May for $60, while the other activity kits in the STEM series will range from $20-$30. DoodleMold kits can also be purchased separately for $15, which include kits for food, key rings, desserts, and eyeglasses.