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OG Happy

Robotic STEM 3 Packs Wooden Puzzle DIY Assembly Building Craft Model Kit

Regular price $33.99 USD
Regular price $43.00 USD Sale price $33.99 USD
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Tax included. Shipping calculated at checkout.

【DIY Assembly Learning Kit】This STEM kit contains all the parts you need to build a miniature Ferris wheel, dinosaur model, and earth-moon-sun globes make a great gift for boys and girls. Powered by 2 * AA Batteries(Batteries are not included). Turn the switch and the Ferris wheel will turn, it is fun and interesting.

【High Quality】These 3D wooden puzzles are made of safe, pollutant-free wood with precise laser pre-cut, the edges of each component have a smooth finish can be tightly integrated, easy to assemble. All parts are made of high-quality safe and recyclable materials.

【Unique Design】The DIY wooden building toys can be painted and decorated to make them unique, and the finished product is very suitable for display on a table, shelf, or showcase in a children's bedroom, playroom, or study area.

【Easy to Assemble】This scientific toy can be tightly connected without welding, easy to install, suitable for children or adults who love manual craftsmanship and science.

【Cultivate Creativity and Imagination】Amazing mini Ferris wheel and dinosaur can actually rotate to create a miniature amusement park at home. By assembling this wooden building kit, children can develop their hand-eye coordination, stimulate imagination and promote their physical and intellectual development.

【Product Information】

  • Suitable age: 6+
  • Weight: 600g
  • Powered by 2 * AA Batteries(Batteries are not included)

Free Shipping over $39

We are committed to providing you with the best shipping options, meanwhile ensuring that we provide the very highest levels of responsiveness to you at all times.


Free shipping is offered on orders over $39.

For orders under $39, standard shipping is charged for $5.99. 

We will send you a confirmation email once your order is verified. After verification, in principle, the orders will not be canceled during this period, considering the handling process already start, but we will try our best to communicate with via email or phone to find a good solution.

Allow 1 to 2 business days for processing of Ground shipments.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will is a significant delay in the shipment of your order, we will contact you via email or telephone timely.

Shipping time: This refers to the time it takes from items to be shipped from our warehouse to the destination. 

Normally we ship by standard express, it takes 10-22 business days.  if your address is in remote area (Click here to find the remote area zipcode), the deliver time will be 30-40 days.

Please try your best to provide us with your physical address instead of PO. BOX address. if you provide PO BOX address, we will send you an email to confirm physical address, if no reply within one business days, we have to ship by post channel which will take 30-40 days on the way.

You will receive a Shipment Confirmation email containing tracking numbers once your order has shipped. The tracking number will be active within 24-48 hours.

You may track your order on page TRACKING on our website, or click here to track.

Note: Affected by Covid-19, there will be some delay on the delivery.

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30-Day Return

30-Day Return & Exchange Policy

We want you to feel comfortable and confident when shopping at OG HAPPY, that’s why we offer a 30-day return & exchange policy. If for any reason you're not satisfied with your purchase, you may return or exchange the unused item in its original condition as long as you contact us within 30 days from the delivery date.

Return & Exchange Conditions

1. Items returned without authorization will not be accepted.

2. The time frame for return & exchange must not exceed 30 days from when the original order was received.

3. All items must be returned in their original condition, without scratches or signs of wear, and must not be resized or altered in any way.

4. When returning or exchanging items, customers must use a shipping method that has tracking on it. Returns or exchanges with no tracking will not be processed.

5. For return, any promotional gifts received must be included with the returned items. Otherwise, the retail price of the promotional gift will be deducted from the refund.

Note: Please do not send your return to the address on your package. That is not our return address and will affect the processing of your return.

Contact US

We believe in delivering excellent customer service, and will do everything possible to satisfy our customers. If you have any questions, comments or suggestions, feel free to email us at

Customer Reviews

Based on 4 reviews
My students loved making these robotic STEMS

I purchased 3 packages for 29 students. I grouped them. Gave instructions on the importance of reading instructions first, then organize all parts while inventorying them. My 5th grade students loved putting these together. I loved seeing their eyes light up and they turn on the motor. So worth it! Thank you.

Bryce Raff

Loved them


This was such a great project. My 7 & 10 year old worked im it together with minimal instruction from me. Took them at least an hour to complete and I did the final push for some of the pieces to completely go together correctly.


This was a really cool project. I did it with my seven year old daughter. The packaging was awesome and while a bit overwhelming to open with so many pieces that need to be popped out, it turned out great.