https://www.poptarts.com/en_US/products/all-flavors/pop-tarts-unfrosted-strawberry-product.html

Apparently, pop tarts without frosting are a thing… They are probably still really sugary even without the frosting.

With hard drives specifically it would cause the arm inside to move and scratch the disk.

Really? I thought magnets placed near hard drives would just magnitize the platters in such a way that the data would be destroyed. In that case it would still work if reformatted I think.