Any trip to Orion mall is incomplete without a visit to Landmark. My son just drags me everytime and the reason behind that is the Lego building block play section.
You get toys, games, puzzles for all age groups. You can find fancy bags for kids, stationary stuff for school.
This is also best place for get your kids getting into reading as kids can sit and read their as well.
Now they have sports section as well so kids can explore on varied options for sports.