A very simple-to-make shawl, all in garter and short rows. Blocks into almost perfect triangular shape. You can use gradient yarn (like Kauni) for the main color, or knit each stripe with different yarn (leftovers, maybe?). I started with 195 g of Kauni, but run out of it after the 17th stripe. So, make sure you either have 210-220 g of Kauni, or have some similar yarn for that last stripe. For the contrasting color, 50 g/ 200 m of fingering-weight is enough.
Skill-wise it's simple, like I said. You are expected, however, to be familiar with short row technique.