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321 Piece Complete Discovery Mindblown Marble Run STEM Construction Set Ages 6+
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321 Piece Complete Discovery Mindblown Marble Run STEM Construction Set Ages 6+

Starting price (see what it sold for on eBay ↗) $13.99 as of Jul 11, 2026
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Condition Used
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Ships from ZIP 809**
donnaaudyne1971 26,414 ratings · 100.00% positive
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Description

From the seller
The Discovery Mindblown Marble Run STEM Construction Set is a 321-piece plastic building toy designed for ages 6 and up. The set includes pieces to create a variety of marble runs, promoting creativity and problem-solving skills.

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