If you are already working on a sweater, just ignore this post. . . the most needed item right now is sweaters, so keep going!!
If, though, you're looking for one more thing to make in time for the February 14 due date, and know there's no chance of finishing a whole sweater, here's a vest pattern. It is long enough (Afghan kids tend to be tall and slim), and the neckline is completely in line with the requirements for modesty for girls and boys. Gauge is 4 stitches per inch (16 sts/10 cm), so it will be fast to knit. This gauge is perfect for the heftier worsteds I love, such as Peace Fleece, Maine wool, Beaverslide, Cascade's Ecological Wool, or various yarns categorized as heavy worsted or chunky. (If in doubt, knit a swatch. Really. It will save you time in the long run.) I don't have any variegated or patterned yarn in that gauge, so I plan to insert several wide stripes at the bottom, just to keep it a little more interesting. And I'm giving some thought to working neck and armhole bands in a contrasting color.
The smallest size in this pattern comes to 39 inches around. I recommend sticking with that size rather than one of the bigger sizes -- in fact, I'm thinking of taking out 4 stitches from the front and 4 stitches from the back to get a 37-inch chest measurement. I will keep the neck shaping exactly as written, though -- it's important to make sure the kid can get it on!
I wish I had a long car trip -- with somebody else driving -- coming up. . .