If you’re carrying around an exposed circuit board ... shell of a dry erase marker. Even better, the felt tip has been replaced with the appropriately sized barrel jack. Check out the ultra ...

Dry erase markers are widely used in various environments including schools, offices, and households. They are typically applied to whiteboards, items made of glass, and specific laminated surfaces.

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Given that they’re super cheap, long-lasting, and can often be revived or refilled after drying out, they may be worth ...