If a cactus could ever look cute, JackRabbit has devised a means to that end with the Cactus Picnic Napkin Set, a set of four 10-by-12-inch handmade napkins screen printed with a grid of perky green cacti. I can't think of a better occasion to debut these prickly succulents than a backyard barbecue — or perhaps a Park(ing) Day picnic. While the weather is still warming up here in San Francisco, temperatures are turning chilly elsewhere, so you'd better snatch these babies up fast and throw some T-bones on the grill. But if you're located in the Lone Star State or other arid environments, these linens won't ever go out of style . . . and you know that cloth napkins are always an eco-fashionable statement.