SEE ALSO: A new crop of stress toys is here to take over where fidget spinners left off These aren't your mother's refrigerator decorations: 14 neodymium magnets in each block hold your creations ...

They vary in material (some of the more popular options are made out of slime), but the ones we're always playing with at our desks are called Speks, a set of 512 small spherical magnets that you ...