鉄粉入りミステリアスマグネットチューブ

My kid spent a whole rainy afternoon watching the cow magnet chase the iron filings up and down the tube, and it never got old. The filings move in such a satisfying swirl when you flip it, and the tube feels solid enough to survive a few drops on the floor.

The tube is sturdy enough for little hands, and the iron filings make the magnet's pull really visible. Only wish the cow magnet slid a bit more smoothly, but it’s a neat toy for sparking curiosity about magnetism.

My kid loves watching the cow magnet mysteriously move through the filings. It's a simple concept but it kept them entertained longer than I expected, though the tube could be a bit sturdier.