Construction toys are available in a wide range of styles, from the classic Lego building blocks, to those that encompass magnetic rods and ball baring structures such as Magnetix, to the Knex construction system that's based on rods and connectors, to the ever popular Megabloks construction toy. All building and construction toys seem to remain firm childhood favourites, and with styles available for those as young as 1 and ranging to teenagers and beyond, there is a lot of scope to develop their interests.