Ages 4+. $44.99. Brain teaser Advent calendar features 16 metal wire puzzles, four magic ball puzzles and four Christmas keychains. Twenty-four days of joy and mental stimulation. $15.99.

It’s also incredibly budget-friendly at just $35. There are a number of puzzle-based Advent calendars out there, but not nearly as many featuring artwork by the iconic Andy Warhol. This ...