Gift wrapping is an art, but it's also about basic geometry. Mathematician Katie Steckles demonstrates a few "mathematically satisfying" ways to wrap presents.
You probably know a few of these already: the standard method of wrapping boxes, of course, and how you can try to get the pattern on the paper to line up over squishy objects. She also shows a neat trick for wrapping a box of Toblerone chocolate (or other equilateral triangular-shaped prism) and how to calculate the perfect paper size to wrap a square box.
It's probably overboard for many people, but perfect for those of us who are nitpicky about precisely wrapped presents or are just crazy about geometry. (Otherwise, check out these simple gift wrapping tips, how to create a gift bag out of wrapping paper, and how to wrap gifts with just two pieces of tape.)