Start with clementines or tangerines in a similar size. Smaller fruit looks like a tiny pumpkin and is easy for kids to hold. Skip any with soft spots or bumpy skin, because they are harder to draw on. Firm, round fruit gives you the best pumpkin shape.
Rinse each clementine under cool water to remove any waxy film or dust. Pat them completely dry with a paper towel. Dry skin takes the ink much better, and your lines come out clean.
Before I draw, I decide on a few face styles. I like triangle eyes, a wide toothy grin, and a few silly or surprised faces. Sketching one on scrap paper first helps me feel confident.
Hold the clementine steady in one hand and draw with the black marker in the other. Start with the eyes, then add the nose and mouth. Keep your lines bold, since thick shapes show up best on the bright orange peel.
Place each finished clementine on the clean tray for a minute or two. This short pause keeps the faces from smudging when you move them. I use this time to clean up my workspace and put the caps back on the markers.
Place the clementines in a decorative bowl or on a pretty plate. Mix up the expressions so the group looks lively and spooky. That is it, and you have a healthy treat and a festive decoration in one.