Thames & Kosmos
Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit: Science Project For Grades 3-8
The verdict
This cyborg hand kit offers engaging STEM learning and fun building for kids around ages 9-10, but some customers experienced frustrating assembly issues, broken parts, and products that didn't function after completion.
What parents love
- • well-made and functional
- • easy-to-follow directions
- • engaging and educational activity
- • fun to build and use
Worth knowing
- • difficult and frustrating assembly
- • parts break during building
- • doesn't work after completion
Safety check — clear
We cross-checked this product and its manufacturer against CPSC recall notices, NHTSA child-seat recalls, FDA recalls and the AAP's safe-sleep criteria on August 31, 2026, and found no active recall or safe-sleep concern. That is a check of the public recall record, not a test of the product.
Not sure you need this at all?
We take no commission on anything here, so we can say what most lists won't: a good deal of standard baby gear is skippable, borrowable, or actively discouraged by current safety guidance.
Read what we tell people to skip ›How we read it: distilled from 293 Amazon reviews, last checked August 19, 2026. We carry no affiliate links and no brand pays to be featured — here's how we work.
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