I have just been to my Asda superstore in Leicester, Fosse Park, and there are various toys and games and stationery items for kids at 1/2 price. I have listed a few below.
Girls musical Disney princess or Winnie the Pooh wand from £2 to £1.
Toy Story stamp markers from £2 to £1.
Mini art sets Toy Story and Disney Princess from £1 to 50p.
Can't remember the price, but also cheap character kids hats, and wind up spinner toys.