Heres an item that works for every age, every stage.

Classic Mini Wire Puzzles made from quality steel.
Test your skills with this set of 6 disentanglement puzzles! Can you separate the pieces and then put them back together again? Set contains: 2 easy, 2 medium and 2 hard.
4 sets to collect.
WARNING: CHOKING HAZARD Small parts.
Not for children under 3 years of age.

The kind of piece thats easy to love, hard to forget.