I've ordered a box of Playmags (150 pieces) for my children who are 10 and 8. I wasn't sure if they'd be too old but after doing a bit of research it seemed like it would be fine. They still play together a LOT, mostly with Lego or Sylvanian Families, but they've got enough of those to sink a ship.
Now that the Playmags have arrived I'm having a bit of a wibble. Do your slightly older children (still) enjoy them?