Sillbird Promo Codes & Coupons September 2026

Reliable kits for learning

This is my third purchase from Sillbird, usually for my science club. I got the STEM Dinosaur Building Kit this time. Like always, the instructions were clear, and all the pieces were there. It's consistently good for getting the kids interested in how things work. Their kits are always dependable.

Fun, but instructions confusing

I bought the Remote Control STEM Building Robot for my son's birthday. The delivery was pretty quick, got it here in 6 days which was nice. Assembly took a while, and some of the diagrams in the instructions were a bit hard to follow, especially for a few steps on the motor wiring. We eventually figured it out. Once built, the robot worked as expected and he's had a lot of fun with it. I thought the price was fair for a kit like this, but clearer instructions would make it a 5-star experience.

Awesome Mars Rover!

The Mars Rover Building Kit is absolutely fantastic! My son loved putting it together, and it actually moves really well. It was challenging enough to be engaging but not so hard he got frustrated. Sillbird totally knocked it out of the park with this one. We'll be back for more for sure!

Detailed review of RC Tracked Racer

I ordered the RC Tracked Racer for my daughter who enjoys engineering challenges. The ordering process on the website was straightforward, and I received an email confirmation right away. The package arrived in good condition within four business days. All the parts were present in the box, organized in numbered bags, which made sorting easier. The instructions were detailed with clear diagrams, which is crucial for these types of kits. It took us about three hours to assemble it completely. The remote control connected without issues, and the tracked racer handles well on both carpet and hard floors. The motors are strong enough for the size. My only minor suggestion would be for the battery compartment to be a bit easier to open and close, but it's a small detail. The quality of the plastic feels durable, and it's holding up well to daily use. Customer service wasn't needed, which is always a good sign.

Good kit, fast ship

I ordered the 12-in-1 Solar Robot Kit. Shipping was fast, got it in about 4 days. My nephew liked building it. Everything was in the box and worked fine.

Good product, minor shipping delay

I bought the Remote Control STEM Building Robot for my son. The kit itself was well-designed and he learned a lot assembling it. The remote control works fine and it holds up to a bit of rough play. Shipping took 5 days to reach Denver, which was a little longer than I expected, but it wasn't a huge deal. Overall, good value for the educational aspect.

Fun activity for kids

Got the 12-in-1 Solar Robot Kit for my nephew's birthday. It was a big hit! He and his dad spent a good few hours putting some of the robots together. It was cool to see it move with just sunlight. Totally kept him busy, which is a win in my book.

Good quality, fast shipping

Ordered the Hydraulic Robot Arm. Arrived quickly. Product quality was solid. Kids enjoyed building it.