Want to make a child happy? Start a fire and add sugar! Slathering a melted marshmallow between two graham crackers with some chocolate has to be the best childhood treat, especially when combined with a little camaraderie around a campfire. Today, we’re re-theming a Coffee Milk puzzle to make some gooey snacks, in honor of National Graham Cracker Day.

Shade four cells in each region to place exactly one L, I, T, or S-tetromino there. Shaded cells form one orthogonally contiguous area.

Today is National Go Fishing Day! So get out there, bait your hook, drop a line, and catch a whopper! What? You forgot the bait? No problem – let’s dig some up right now! I see here a grid with a whole bunch of worm burrows.

Today in 1790, Great Britain issued Patent #1764 to Thomas Saint for the very first sewing machine design. Sadly, he may have patented the idea, but he never actually built and marketed his invention. That happened in 1874, thanks to William Newton Wilson, who discovered the old patent, built it, and proved it worked. To honor the day, let’s sew some Stitches!

Calcudoku is the generic name for a Sudoku variant known better by the trademarked titles KenKen or Kendoku. To make things a little easier, I color-coded regions with the same math operation.