Segmented binding members with flexible flanges allow easy sheet addition and removal without tearing, maintaining a flat notebook structure.
A magnetized half-ball apparatus holds a coin via magnetic attraction to enable rapid shape transformation into a complete sphere.
An iron tube holds a rotating magnet in a clamped bracket to increase magnetic force while maintaining structural stability.
Transverse convex strips lock adjacent buckle units together, solving the trade-off between connection reliability and adjustment convenience.
A bubble generating assembly uses a cam surface to rotate follower members between solution loading and air stream alignment.