The Carvable Pumpkin, a player-deployable decorative (yet functional) base element in RUST, is available from the in-game item store during the Halloween Event each year (or the Steam store thereafter).
Instead of taking fuel like the lantern, carvable pumpkins will light up if Wood is put in them. Unlike the large wooden sign, when the paint feature is used, empty space is put onto the pumpkin face instead of colors. This is intended to represent carving a pumpkin in real life. Light will then shine through once the carvable pumpkin is lit. Happy Halloween!