The Mayka Toy Block Tape, previously called Nimuno Loops (via Indiegogo) is typically a product that you wish you came up with.
This adhesive give your LEGO blocks a new dimension as you can now stick your constructions on anything imagineable. Just like a regular roll of tape you can cut pieces off and stick them anywhere.
Even though this product hasn’t been officially endorsed by LEGO the Mayka tape plays very well with it. You can even build sturdy constructions on your ceiling if you want to.
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