I bought one of my older brothers a Chantry Knife steel (officially, they call it a sharpener but it's really just some cylindrical steels at an angle and on springs). He's thrilled with it.
Then I bought my oldest brother an Onyx Paleta (aka Popsicle) mold, some extra wooden sticks and two books on Paletas/Popsicles ("Paletas: Authentic Recipes for Mexican Ice Pops, Shaved Ice & Aguas Frescas" and "People's Pops: 55 Recipes for Ice Pops, Shave Ice, and Boozy Pops from Brooklyn's Coolest Pop Shop"). That will keep him busy for a while.
Edited to pluralize