Locko Building Blocks are toy building blocks that Timmy Turner used to build a replica of the Eiffel Tower.
Timmy Turner used these blocks to build a replica of the Eiffel Tower, but disruptions caused his tower to topple over and collapse every time.
They are small brick shaped blocks that come in yellow, blue, and red colors.
Because of his inability to fully construct an Eiffel Tower replica using Lockos Building Blocks, Timmy eventually became frustrated enough to wish away all forms of sound. Wanda later used the blocks to explain to Cosmo that a meteor was about to destroy Dimmsdale.
- They are a parody of LEGO bricks.