Two Retro Round Bulbs From Christmas Lights Sparkle

Two old-fashioned round light bulbs overlap on the page, a larger one in front and a smaller one tucked behind it on the left. Each bulb has a threaded screw base at the bottom, two thin wires running up inside the glass, and a little curly filament on top of them. A curved highlight line sits near the top of each bulb, and a small four-pointed star sparkle marks the upper edge of both, so they look shiny and lit. The shapes are big and the lines are bold, which makes this a good fit for younger kids with chunky crayons. Try coloring the two bulbs in different holiday colors, like red and green, then leave the filaments yellow so it looks like they are glowing. The printable page also works well for talking about how string lights work.