At first glance these look like Lego building blocks for young kids. In reality, these toys are disguising something more functional: white out tape. This product is probably meant to appeal to kids or teens as a fun alternative to office-supply-like white out tape dispensers. How fun would it be to have toy blocks on your desk? It would sure raise the teacher's suspicions that you may just be having too much fun in class.
These are from Korea, so I have no idea if you can find these in the US or not.
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